1 UCDP Dyadic Dataset Version History and Known Errata Version 1–2016, 30 May 2016
1
UCDP Dyadic Dataset
Version History and Known Errata
Version 1–2016, 30 May 2016
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
2
Introduction
This document gives a historical record of the changes made to the dataset since its initial
release. It will also contain, if applicable, a list of known errata that will be updated in the
next release of the dataset. We encourage scholars using the data to always use the latest
version available if possible.
Changes from Version 1-2015 to 1-2016
New dyads added
DyadID ConflictID Location SideB Year(s) 876 1-297 Lebanon IS 2014
877 1-196 Egypt Ansar Bayt al-Maqdis 2014
11199 1-299 Afghanistan Government of United Kingdom,
Government of United States of
America
2001
13821 1-284 Syria PYD 2012-13
14471 1-175 Rumania Military faction (forces of Nicolae
Ceausescu)
1989
14620 1-286 Syria IS 2013-14
Dyad-years added
DyadID ConflictID Location SideB Year(s) 272 1-190 Serbia
(Yugoslavia)
Republic of Croatia 1992
380 1-37 Israel PIJ 2001
11377 1-86 DR Congo PARC-FAAL 2011-12
853 1-277 Myanmar
(Burma)
NSCN-K 1991
Dyads removed
DyadID ConflictID Location SideB Year(s)
12487 1-196 Egypt IS-SP 2014
14244 1-63 Lebanon IS 2014
Misc. changes
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
223 1-126 Bangladesh Startprec 5 4
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
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Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
223 1-126 Bangladesh 1975-91 Startprec2 5 4
239 1-185 Georgia 1991-92 Startprec2 2 1
251 1-186 Haiti Startdate 1991-10-02 1991-09-30
251 1-186 Haiti Startprec 2 1
259 1-197 Georgia 1992-93 Startdate2 1992-08-17 1992-08-18
259 1-197 Georgia 1992-93 Startprec2 1 2
272 1-190 Serbia
(Yugoslavia)
Startdate 1991-07-09 1991-07-15
272 1-190 Serbia
(Yugoslavia)
1991-92 Startprec2 1 2
273 1-190 Serbia
(Yugoslavia)
1991-92 Int 1 2
292 1-194 Bosnia-
Herzegovina
1992-95 Startprec2 1 2
293 1-203 Bosnia-
Herzegovina
Startdate 1993-01-13 1992-10-20
293 1-203 Bosnia-
Herzegovina
1993-94 Startdate2 1993-01-14 1993-01-15
295 1-218 Serbia
(Yugoslavia)
1998-99 Startprec2 2 1
297 1-198 Georgia Startdate 1992-05-12 1991-12-22
297 1-198 Georgia 2008 Startdate2 2008-08-12 2008-12-31
297 1-198 Georgia 2008 Startprec2 2 5
300 1-195 Bosnia-
Herzegovina
1992-93 Int 1 2
301 1-195 Bosnia-
Herzegovina
1993 Int 1 2
303 1-195 Croatia 1995 Startdate2 1995-05-01 1995-12-31
303 1-195 Croatia 1995 Startprec2 1 5
341 1-223 Macedonia,
FYR
2001 Startdate2 2001-05-03 2001-05-31
341 1-223 Macedonia,
FYR
2001 Startprec2 1 3
348 1-206 Russia
(Soviet
Union)
Startdate 1994-05-27 1994-11-25
348 1-206 Russia
(Soviet
Union)
1999-
2007
Startdate2 1999-08-11 1999-12-31
348 1-206 Russia
(Soviet
Union)
1999-
2007
Startprec2 3 5
350 1-204 Russia
(Soviet
Union)
1993 Startdate2 1993-10-04 1993-10-03
357 1-175 Rumania Startdate 1989-12-17 1989-12-22
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
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Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
361 1-193 Azerbaijan 2008 SideB2nd Government of
Armenia
361 1-193 Azerbaijan 2008 Type 4 3
361 1-193 Azerbaijan 2008 GWNoB2nd 371
362 1-201 Azerbaijan Startdate 1993-06-06 1993-06-04
367 1-199 Moldova Startdate 1992-03-01 1991-12-13
368 1-220 Russia
(Soviet
Union)
1999 Startprec2 2 1
370 1-181 Russia
(Soviet
Union)
1990-91 Startprec2 1 3
373 1-182 Russia
(Soviet
Union)
Startdate 1990-01-20 1990-01-19
373 1-182 Russia
(Soviet
Union)
Startprec 2 1
373 1-182 Russia
(Soviet
Union)
1990 Startdate2 1990-01-23 1990-01-19
377 1-37 Israel 2000-02 Startdate2 2000-12-10 2000-12-31
377 1-37 Israel 2000-02 Startprec2 1 5
377 1-37 Israel 2005-07 Startdate2 2005-10-21 2005-12-31
377 1-37 Israel 2005-07 Startprec2 1 5
380 1-37 Israel 2002-12 Startdate2 2001-12-14 2002-12-31
380 1-37 Israel 2002-12 Startprec2 1 5
381 1-37 Israel Startdate 1989-05-03 1989-05-31
381 1-37 Israel Startprec 1 3
381 1-37 Israel 2001-09 Startdate2 2001-07-02 2001-12-31
381 1-37 Israel 2001-09 Startprec2 1 5
381 1-37 Israel 2011-12 Startdate2 2011-12-09 2011-12-31
381 1-37 Israel 2011-12 Startprec2 1 5
419 1-37 Israel 2001 Startdate2 2001-10-24 2001-12-31
419 1-37 Israel 2001 Startprec2 1 5
423 1-137 Afghanistan 2001 SideB2nd Government of
Iran
Government
of Australia,
Government
of Canada,
Government
of France,
Government
of Germany,
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
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Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
Cont. Government
of Italy,
Government
of Japan,
Government
of Jordan,
Government
of
Netherlands,
Government
of Poland,
Government
of Russia
(Soviet
Union),
Government
of Turkey,
Government
of United
Kingdom,
Government
of United
States of
America
423 1-137 Afghanistan 2001 GWNoB2nd 630 900, 20, 220,
260, 325,
740, 663,
210, 290,
365, 640,
200, 2
426 1-37 Israel Startdate 2000-10-30 2001-11-29
426 1-37 Israel 2002-04 Startdate2 2002-03-03 2002-03-05
427 1-37 Israel Startdate 1995-01-02 1996-09-25
427 1-37 Israel 2000-02 Startdate2 2000-11-01 2000-12-31
427 1-37 Israel 2000-02 Startprec2 1 5
457 1-188 Turkey 2005 Startdate2 2005-06-17 2005-06-18
462 1-1 Bolivia Startdate 1946-07-18 1946-06-30
462 1-1 Bolivia Startprec 1 4
462 1-1 Bolivia 1946 Startdate2 1946-07-21 1946-06-30
462 1-1 Bolivia 1946 Startprec2 2 4
629 1-37 Israel Startdate 2001-08-19 2001-12-12
643 1-251 Israel 2006 Startdate2 2006-07-13 2006-12-31
643 1-251 Israel 2006 Startprec2 1 5
704 1-118 Uganda Startprec 5 4
756 1-19 Hyderabad 1947-48 Location Hyderabad Hyderabadh
757 1-28 Hyderabad,
India
1948 Location Hyderabad,
India
Hyderabadh,
India
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
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Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
760 1-137 Afghanistan 1980-91 Startdate2 1980-12-31 1984-12-31
773 1-257 Russia
(Soviet
Union)
Startdate 2007-10-07 2007-10-09
814 1-86 DR Congo Startdate 2010-11-08 2012-02-08
814 1-86 DR Congo 2014 Startdate2 2014-07-01 2014-08-26
814 1-86 DR Congo 2014 Startprec2 2 1
836 1-177 Mali 2012,
2014
SideB CMA MNLA
853 1-277 Myanmar
(Burma)
Startdate 1995-04-17 1995-04-17
878 1-271 Libya 2014 SideB Forces of the
House of
Representatives
Libyan
National
Army
Erata
The actor NDFB-S, active in dyad 14102 in conflict 1-227 was given an incorrect actor ID in
version 1-2015, 5826. The correct actor ID should be 3151.
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
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Changes from Version 1-2014 to 1-2015
New dyads added
DyadID ConflictID Location SideB Year(s) 11299 1-139 India NLFT-B 2004
11932 1-29 India CPI-ML-J 2000
12380 1-222 Central
African
Republic
anti-Balaka 4201
14273 1-279 Myanmar
(Burma)
PSLF 2013
Dyad-years added
DyadID ConflictID Location SideB Year(s) 252 1-112 Philippines MNLF-NM 2005
336 1-152 India UNLF 1993
344 1-134 Indonesia Fretilin 1999
361 1-193 Azerbaijan Republic of Nagorno Karabakh 1997-1998,
2008
412 1-137 Afghanistan Hizb-i Islami-yi Afghanistan 2002-2003,
2006
853 1-277 Myanmar
(Burma)
NSCN-K 1995
Dyad-years removed
DyadID ConflictID Location SideB Year(s) 246 1-143 Iran MEK 1992
252 1-112 Philippines MNLF-NM 2002
262 1-139 India ATTF 1993, 1998-
1999
269 1-139 India NLFT 1995, 1998,
2004, 2006
296 1-170 India ULFA 1991
313 1-227 India NDFB 1993, 1995,
2000, 2010
325 1-152 India PLA 1992-1993
336 1-152 India UNLF 1997, 2008
344 1-134 Indonesia Fretilin 1989
355 1-169 India Kashmir insurgents 1989
379 1-103 Cambodia FUNCINPEC 1990
405 1-29 India PWG 1990
406 1-29 India MCC 1992-1993,
1996, 1998
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
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Misc. changes
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
190 1-192 Angola 1994 StartPrec2 5 7
217 1-10 Philippines 1997 StartDate2 1997-11-23 1997-12-31
217 1-10 Philippines 1997 StartPrec2 1 5
217 1-10 Philippines 1999-2013 StartDate2 1999-06-06 1999-12-31
217 1-10 Philippines 1999-2013 StartPrec2 1 5
219 1-183 Trinidad and
Tobago
1990 StartDate2 1990-08-02 1990-07-30
220 1-10 Philippines 1989-1990 StartDate2 1989-12-02 1989-12-31
220 1-10 Philippines 1989-1990 StartPrec2 1 5
227 1-208 Ecuador, Peru 1995 StartDate2 1995-01-31 1995-01-30
233 1-173 Panama,
United States
of America
1989 StartDate2 1989-12-23 1989-12-20
233 1-173 Panama,
United States
of America
1989 StartDate2 2 1
242 1-112 Philippines 1990-2011 StartDate 1990-02-01 1990-02-04
242 1-112 Philippines 1990 StartDate2 1990-02-02 1990-02-04
242 1-112 Philippines 1994 StartDate2 1994-10-16 1994-12-31
242 1-112 Philippines 1994 StartPrec2 1 5
242 1-112 Philippines 1996-2005 StartDate2 1996-04-06 1996-12-31
242 1-112 Philippines 1996-2005 StartPrec2 1 5
242 1-112 Philippines 2007-2009 StartDate2 2007-03-06 2007-12-31
242 1-112 Philippines 2007-2009 StartPrec2 2 5
242 1-112 Philippines 2011 StartDate2 2011-10-18 2011-12-31
242 1-112 Philippines 2011 StartPrec2 1 5
246 1-143 Iran 1991 StartDate2 1991-04-03 1991-12-31
246 1-143 Iran 1991 StartPrec2 3 5
246 1-143 Iran 1993 StartDate2 1993-04-09 1991-12-31
246 1-143 Iran 1993 StartPrec2 1 5
246 1-143 Iran 1997 StartDate2 1997-02-18 1997-12-31
246 1-143 Iran 1997 StartPrec2 1 5
246 1-143 Iran 1999-2001 StartDate2 1999-11-25 1999-12-31
246 1-143 Iran 1999-2001 StartPrec2 1 5
247 1-112 Philippines 1993 StartDate2 1993-02-09 1993-12-31
247 1-112 Philippines 1993 StartPrec2 1 5
249 1-112 Philippines 2000-2007 StartDate2 2000-04-23 2000-12-31
249 1-112 Philippines 2000-2007 StartPrec2 1 5
249 1-112 Philippines 2009-2013 StartDate2 2009-05-11 2009-12-31
249 1-112 Philippines 2009-2013 StartPrec2 1 5
260 1-6 Iran 1990 StartDate2 1990-07-10 1990-07-06
260 1-6 Iran 1990 StartPrec2 2 1
262 1-139 India 1997 StartDate2 1997-11-07 1997-12-31
262 1-139 India 1997 StartPrec2 1 5
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
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Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
269 1-139 India 1999-2003 StartDate2 1999-11-22 1997-06-10
285 1-74 Iraq 1995-1996 StartDate2 1995-03-14 1995-12-31
285 1-74 Iraq 1995-1996 StartPrec2 1 5
296 1-170 India 1990 StartDate2 1990-11-30 1990-12-31
296 1-170 India 1990 StartPrec2 2 5
298 1-62 Iraq 1991-1996 StartDate2 1991-04-24 1991-12-31
298 1-62 Iraq 1991-1996 StartPrec2 1 5
309 1-227 India 1989-1990 StartDate2 1989-03-16 1989-08-12
309 1-227 India 1989-1990 StartPrec2 5 1
313 1-227 India 1994-2004 StartDate 1992-10-08 1992-11-21
313 1-227 India 1994 StartDate2 1994-07-23 1993-12-31
313 1-227 India 1994 StartPrec2 2 5
313 1-227 India 1996-1999 StartDate2 1996-10-28 1993-12-31
313 1-227 India 1996-1999 StartPrec2 1 5
313 1-227 India 2001-2004 StartDate2 2001-08-04 1993-12-31
313 1-227 India 2001-2004 StartPrec2 1 5
325 1-152 India 2000 StartDate2 2000-11-22 2000-12-31
325 1-152 India 2000 StartPrec2 1 5
327 1-137 Afghanistan 2003-2013 StartDate2 2003-02-14 2003-12-31
327 1-137 Afghanistan 2003-2013 StartPrec2 2 5
327 1-137 Afghanistan 2010-2013 SideA2nd Government
of Pakistan
327 1-137 Afghanistan 2010-2013 GWNoA2nd 770
332 1-226 Australia,
Iraq, United
Kingdom,
United States
of America
2003 StartDate2 2003-03-23 2003-03-22
332 1-226 Australia,
Iraq, United
Kingdom,
United States
of America
2003 StartPrec2 1 2
332 1-226 Australia,
Iraq, United
Kingdom,
United States
of America
2003 Region 1, 2, 5
336 1-152 India 1994 StartDate2 1993-12-31 1994-08-21
336 1-152 India 1994 StartPrec2 5 2
342 1-92 Colombia 2008 StartDate2 2008-12-05 2008-12-31
342 1-92 Colombia 2008 StartPrec2 1 5
342 1-92 Colombia 2010 StartDate2 2010-09-03 2010-12-31
342 1-92 Colombia 2010 StartPrec2 1 5
344 1-134 Indonesia 1992 StartDate2 1992-12-15 1992-12-31
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
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Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
344 1-134 Indonesia 1992 StartPrec2 2 5
344 1-134 Indonesia 1997-1998 StartDate2 1997-05-31 1997-12-31
344 1-134 Indonesia 1997-1998 StartPrec2 1 5
347 1-171 Indonesia 1990-2005 StartDate 1989-05-02 1989-05-31
347 1-171 Indonesia 1999-2005 StartDate2 1999-06-01 1999-12-31
347 1-171 Indonesia 1999-2005 StartPrec2 1 5
355 1-169 India 1990-2013 StartDate2 1990-02-12 1989-12-11
355 1-169 India 1990-
1993,
1999, 2001
IntensityLevel 1 2
360 1-224 United States
of America
2001-2013 GWNoLoc 520, 700,
770
360 1-224 United States
of America
2010-2013 SideA2nd Government
of Pakistan
360 1-224 United States
of America
2010-2013 GWNoA2nd 770
361 1-193 Azerbaijan 2005 StartDate2 2005-12-05 2005-12-31
361 1-193 Azerbaijan 2005 StartPrec2 1 5
361 1-193 Azerbaijan 2012 StartDate2 2012-09-25 2012-12-31
361 1-193 Azerbaijan 2012 StartPrec2 1 5
379 1-103 Cambodia 1991 StartDate2 1991-05-01 1982-12-31
379 1-103 Cambodia 1991 StartPrec2 1 5
387 1-156 India 1989 IntensityLevel 1 2
405 1-29 India 1991-1994 StartDate2 1991-07-16 1990-12-31
405 1-29 India 1991-1994 StartPrec2 1 5
406 1-29 India 1999-2004 StartDate 1992-02-12 1992-04-06
407 1-201 Azerbaijan 1995 StartDate 1994-09-30 1995-03-13
411 1-137 Afghanistan 1996 StartDate2 1996-10-05 1996-12-31
411 1-137 Afghanistan 1996 StartPrec2 1 5
412 1-137 Afghanistan 2008-2011 StartDate2 2008-04-06 2008-12-31
412 1-137 Afghanistan 2008-2011 StartPrec2 1 5
423 1-137 Afghanistan 1996-2001 StartPrec2 1 2
442 1-62 Iraq 2004,
2007-2008
SideB al-Mahdi
Army
Al-Mahdi
Army
442 1-62 Iraq 2007-2008 StartDate2 2007-02-04 2007-12-31
442 1-62 Iraq 2007-2008 StartPrec2 1 5
443 1-62 Iraq 2004-2007 StartDate2 2004-01-18 2004-06-24
448 1-62 Iraq 2009 SideA2nd Government
of Rumania
448 1-62 Iraq 2009 GWNoA2nd 360
448 1-62 Iraq 2004-2013 SideB IS ISIS
459 1-143 Iran 2011 StartDate2 2011-07-23 2011-12-31
459 1-143 Iran 2011 StartPrec2 1 5
476 1-137 Afghanistan 1990 StartDate2 1990-03-06 1990-03-08
476 1-137 Afghanistan 1990 StartPrec2 1 1
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
11
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
484 1-15 France,
Thailand
1946 Region 1
489 1-151 Argentina,
United
Kingdom
1982 Region 5
492 1-127 Cyprus,
Turkey
1974 Region 1
533 1-109 China, Russia
(Soviet
Union)
1969 Region 1
570 1-63 Lebanon 1958 SideB Independent
Nasserite
Movement
Independent
Nasserite
Movement / Mourabitoun
militia
578 1-62 Iraq 2005-2007 StartDate 2004-10-03 2004-03-31
604 1-42 Egypt, United
Kingdom
1951-1952 Region 1
609 1-75 France,
Tunisia
1961 Region 1
612 1-79 Indonesia,
Netherlands
1962 Region 1
620 1-55 Egypt,
France, Israel,
United
Kingdom
1956 Region 1
687 1-157 Sri Lanka 1985, 1989 StartDate 1985-05-04 1978-05-06
758 1-256 Afghanistan,
Russia (Soviet
Union)
1979 Region 1
768 1-209 Pakistan 2007-2013 StartDate 2007-05-31 2007-07-04
839 1-275 Bangladesh 2005-2006 SideB PBCP-J PBCP-
Janajudhha
853 1-277 Myanmar
(Burma)
2000-2007 StartDate 1995-04-17 2000-02-28
859 1-270 South Sudan 2013 IntensityLevel 1 2
859 1-270 South Sudan 2013 StartDate 2013-12-15 2013-12-16
859 1-270 South Sudan 2013 StartDate2 2013-12-15 2013-12-18
859 1-270 South Sudan 2013 StartPrec2 1 2
865 1-274 Mali 2013 SideB Signed-in-
Blood
Battalion
Signed-in-
blood-
Battalion
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
12
Errata
In version 1-2014, the dyad Government of India – NDFB-S was given a dyad id of 12557 for
the year 2013. However, the id was not accurate. The correct dyad id for this dyad is 14102.
In dyad 578 conflict 1-62 (Government of Iraq – RJF) the actors in SideA2nd had mistakenly
been listed in SideA, and no countries at all had been listed in SideA2nd. The correct SideA is
Government of Iraq.
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
13
Changes from Version 1-2013 to 1-2014
New dyads added
DyadID ConflictID Location SideB Year(s)
848 1-200 Tajikistan PFT 1992
849 1-200 Tajikistan Forces of Mullo Abdullo 2000, 2010
852 1-70 Ethiopia Military faction (Harar garrison) 1991
853 1-277 Myanmar
(Burma)
NSCN-K 2000-2001,
2005-2007
863 1-274 Mali AQIM 2009
867 1-102 Syria Syrian insurgents 2011-12
Dyad-years added
DyadID ConflictID Location SideB Year(s)
306 1-23 Myanmar
(Burma)
KNU 1994
306 1-23 Myanmar
(Burma)
KNU 2004
340 1-209 Pakistan MQM 1994
360 1-224 United States
of America
al-Qaida 2003
415 1-200 Tajikistan Forces of Khudoberdiyev 1997
768 1-209 Pakistan TTP 2007
Dyads removed
DyadID ConflictID Location SideB Year(s)
323 1-25 Myanmar
(Burma)
ARIF 1991-1992
453 1-54 India NSCN-K 2005-2007
721 1-209 Pakistan TNSM 2007
765 1-258 India DHD - BW 2008
821 1-102 Syria FSA 2011-2012
847 1-102 Syria Jabhat al-Nusra li al-Sham 2012
Dyad-years removed
DyadID ConflictID Location SideB Year(s)
41 1-86 DR Congo
(Zaire)
MLC 2001
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
14
DyadID ConflictID Location SideB Year(s)
337 1-174 Papua New
Guinea
BRA 1989
366 1-147 Spain ETA 1992
587 1-68 DR Congo
(Zaire)
State of Katanga 1960
638 1-129 Pakistan Baloch Ittehad 2005
771 1-141 Somalia Harakat Ras Kamboni 2008
Misc. changes
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
4 1-191 Algeria Startdate 1998-12-15 1998-12-31
4 1-191 Algeria 2009 SideA2nd Mali
4 1-191 Algeria 2009 Type 3 4
4 1-191 Algeria 2009 GWNoA2nd 432
4 1-191 Algeria 2010-11 SideA2nd Niger
4 1-191 Algeria 2010-11 Type 3 4
4 1-191 Algeria 2010-11 GWNoA2nd 436
12 1-90 Burundi 1994-1998 Startprec2 3 2
16 1-210 Cameroon,
Nigeria
1996 Startprec2 3 12
17 1-222 Central
African
Republic
2001 Startdate2 2001-06-01 2001-06-03
17 1-222 Central
African
Republic
2001 Startprec2 1 2
19 1-91 Chad Startprec 3 1
20 1-91 Chad 1990 Int 1 2
36 1-214 Congo 1993 Startprec2 3 2
41 1-86 DR Congo
(Zaire)
2000 Int 1 2
44 1-184 Djibouti Startdate 1997-09-01 1997-09-30
44 1-184 Djibouti Startprec 1 3
52 1-168 Ethiopia Startdate 1996-12-31 1996-06-30
52 1-168 Ethiopia Startprec 5 4
52 1-168 Ethiopia 1996 Startdate2 1996-12-31 1996-06-30
52 1-168 Ethiopia 1996 Startprec2 5 4
89 1-225 Ivory Coast 2002 Startdate2 2002-09-20 2002-09-19
89 1-225 Ivory Coast 2002 Startprec2 2 1
92 1-217 Lesotho 1998 Startdate2 1998-09-22 1998-09-23
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
15
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
94 1-146 Liberia 1990 Startprec2 1 2
96 1-177 Mali 1990 Startprec2 2 1
127 1-179 Rwanda 1990-1994 Startprec2 1 2
129 1-180 Senegal 1990 Startprec2 2 13
148 1-118 Uganda Startdate 1987-12-03 1987-12-31
148 1-118 Uganda Startprec 2 5
149 1-118 Uganda 1986-1987 Startprec2 1 2
151 1-118 Uganda 2011 SideA2nd Government
of Sudan
151 1-118 Uganda 2011 GWNOA2nd 625, 626
158 1-167 Comoros Startprec 2 1
189 1-214 Congo Startdate 1994-01-29 1997-06-05
189 1-214 Congo 1997 SideA2nd Angola,
Chad
189 1-214 Congo 1997 GWNoA2nd 540, 483
190 1-192 Angola Startdate 1992-06-06 1992-12-31
190 1-192 Angola Startprec 1 7
191 1-192 Angola Startdate 1991-06-03 1991-05-18
191 1-192 Angola Startprec 3 1
191 1-192 Angola 1991 Startprec2 3 2
208 1-141 Somalia Startdate 1989-04-14 1989-04-30
210 1-141 Somalia Startdate 1990-07-28 1990-11-13
210 1-141 Somalia Startdate 1991-09-07 1991-03-06
210 1-141 Somalia Startprec 2 1
243 1-157 Sri Lanka 1984-2001 Startdate2 1984-09-01 1984-09-10
243 1-157 Sri Lanka 1994 Int 1 2
244 1-186 Haiti 1989 Startprec2 2 1
256 1-117 Sri Lanka 1989 Int 1 2
307 1-67 Myanmar
(Burma)
Startdate 1996-09-28 1986-09-28
307 1-67 Myanmar
(Burma)
1996-2002 Startdate2 1996-12-31 1996-12-19
307 1-67 Myanmar
(Burma)
1996-2002 Startprec2 5 1
308 1-67 Myanmar
(Burma)
1994 Int 1 2
309 1-227 India Startdate 1989-02-16 1989-02-18
309 1-227 India Startdate2 1989-08-12 1989-10-10
312 1-25 Myanmar
(Burma)
Startdate 1991-12-26 1991-11-14
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
16
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
312 1-25 Myanmar
(Burma)
1991 Startprec2 3 2
314 1-23 Myanmar
(Burma)
2000 Startdate2 2000-12-31 2000-01-28
314 1-23 Myanmar
(Burma)
2000 Startprec2 5 1
321 1-228 Myanmar
(Burma)
Startdate 1997-03-16 1997-03-31
321 1-228 Myanmar
(Burma)
Startprec 5 3
321 1-228 Myanmar
(Burma)
Startprec2 5 2
322 1-24 Myanmar
(Burma)
Startdate 1990-12-31 1990-03-20
322 1-24 Myanmar
(Burma)
Startprec 5 2
322 1-24 Myanmar
(Burma)
Startdate2 1990-12-31 1990-03-20
322 1-24 Myanmar
(Burma)
Startprec2 5 2
326 1-26 Myanmar
(Burma)
Startdate 1996-12-23 1996-12-31
326 1-26 Myanmar
(Burma)
Startprec 5 3
326 1-26 Myanmar
(Burma)
1996 Startprec2 5 2
327 1-137 Afghanistan 2009 SideA2nd Government
of Bosnia-
Herzegovina,
Government
of Hungary,
Government
of United
Arab
Emirates
327 1-137 Afghanistan 2009 GWNoA2nd 310, 346, 696
337 1-174 Papua New
Guinea
Startdate 1989-04-06 1989-10-28
337 1-174 Papua New
Guinea
1990 Startdate2 1990-02-07 1989-12-31
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
17
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
337 1-174 Papua New
Guinea
1990 Startprec2 1 5
340 1-209 Pakistan Startdate 1990-02-11 1990-02-07
340 1-209 Pakistan Startprec 2 1
340 1-209 Pakistan 1990 Startdate2 1990-02-11 1990-06-01
340 1-209 Pakistan 1990 Startprec2 2 1
345 1-20 India,
Pakistan
1999 Int 1 2
353 1-200 Tajikistan 1996 Int 2 1
353 1-200 Tajikistan Startdate 1992-05-06 1992-05-05
360 1-224 United States
of America
2009 SideA2nd Government
of Jordan
Denmark
360 1-224 United States
of America
2009 GWNoA2nd 663
390
360 1-224 United States
of America
2010 SideA2nd Government
of Jordan
360 1-224 United States
of America
2010 GWNoA2nd 663
360 1-224 United States
of America
2011-12 SideA2nd Government
of
Afghanistan,
Government
of Jordan
360 1-224 United States
of America
2011-12 GWNoA2nd 700, 663
370 1-181 Russia (Soviet
Union)
Startdate 1990-01-19 1990-01-31
370 1-181 Russia (Soviet
Union)
Startprec 3 4
370 1-181 Russia (Soviet
Union)
1990-91 Startdate2 1990-08-22 1990-08-31
370 1-181 Russia (Soviet
Union)
Startprec2 3 4
376 1-63 Lebanon SideB Forces of
Michel Aoun
Lebanese
Army
(Aoun)
382 1-65 Laos Startdate 1989-08-25 1976-12-31
382 1-65 Laos Startprec 1 5
382 1-65 Laos 1989 Startdate2 1989-08-25 1989-12-31
382 1-65 Laos 1989 Startprec2 1 13
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
18
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
412 1-137 Afghanistan 2009 SideA2nd Government
of Bosnia-
Herzegovina,
Government
of Hungary,
Government
of United
Arab
Emirates
412 1-137 Afghanistan 2009 GWNoA2nd 310, 346, 696
415 1-200 Tajikistan Startdate 1997-06-17 1998-11-04
415 1-200 Tajikistan 1997-98 Startdate2 1997-08-30 1998-11-04
415 1-200 Tajikistan 1997-98 Startprec2 5 1
435 1-130 Eritrea 1997 Startdate2 1997-06-30 1997-04-30
435 1-130 Eritrea 1997 Startprec2 5 13
444 1-221 Uzbekistan Startprec 1 2
446 1-249 Nigeria Startdate 2003-12-28 2003-12-31
446 1-249 Nigeria Startprec 2 3
448 1-62 Iraq SideB ISIS ISI
468 1-7 Iran 1946 StartDate2 1946-12-16 1946-12-31
498 1-94 Indonesia Startprec2 1965 1 2
544 1-129 Pakistan Territory Balochistan Baluchistan
540 1-114 Madagascar
(Malagsy)
Startdate 1971-04-30 1971-12-31
540 1-114 Madagascar
(Malagsy)
Startprec 3 6
540 1-114 Madagascar
(Malagsy)
1971 Startdate2 1971-04-30 1971-12-31
540 1-114 Madagascar
(Malagsy)
1971 Startprec2 3 6
553 1-103 Cambodia Startdate 1978-12-30 1978-12-31
553 1-103 Cambodia Startprec 2 3
587 1-68 DR Congo
(Zaire)
StartDate 1961-10-27 1960-07-31
587 1-68 DR Congo
(Zaire)
Startprec 1 4
587 1-68 DR Congo
(Zaire)
1961-62 StartDate2 1961-11-12 1960-07-31
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
19
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
587 1-68 DR Congo
(Zaire)
1961-62 Startprec2 3 4
588 1-69 DR Congo
(Zaire)
1961-62 Startprec,
Startprec2
2 4
613 1-77 China, India 1962 Startdate2 1962-11-21 1962-12-31
613 1-77 China, India 1962 Startprec2 1 15
615 1-33 Yemen
(North
Yemen)
Startdate 1948-03-15 1948-03-31
615 1-33 Yemen
(North
Yemen)
Startprec 1 4
615 1-33 Yemen
(North
Yemen)
1948 Startdate2 1948-03-15 1948-03-31
615 1-33 Yemen
(North
Yemen)
Startprec2 1 4
621 1-36 Guatemala 1949 Startdate2 1949-07-18 1949-07-19
621 1-36 Guatemala 1949 Startprec2 1 2
628 1-222 Central
African
Republic
2006 Startprec2 2 1
632 1-141 Somalia Startdate 2006-09-18 2006-10-09
633 1-91 Chad Startprec 2 1
638 1-129 Pakistan SideB Baloch
Ittehad
Baluch
Ittehad
638 1-129 Pakistan Territory Balochistan Baluchistan
638 1-129 Pakistan Startdate 2006-01-12 2005-12-19
638 1-129 Pakistan Startprec 1 2
638 1-129 Pakistan 2006 Startdate2 2006-07-05 2005-12-19
638 1-129 Pakistan Startprec2 1 2
639 1-129 Pakistan Territory Balochistan Baluchistan
648 1-113 Sudan Startdate 2007-04-29 2007-08-01
648 1-113 Sudan Startprec 3 1
652 1-72 Nepal SideB NC Nepali
Congress
676 1-85 Sudan Side B SSLM Anya Nya
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
20
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
680 1-86 DR Congo Side B Military
faction
(forces of
Jean
Schramme)
Opposition
militias
708 1-118 Uganda 1988 Startdate 1988-03-18 1988-03-17
708 1-118 Uganda 1988 Startprec 3 2
708 1-118 Uganda Startdate2 1988-03-18 1988-03-17
708 1-118 Uganda Startprec2 4 2
722 1-63 Lebanon SideB NSF LNM
756 1-19 Hyderabadh GWNoA 751 -99
756 1-19 Hyderabadh GWNoLoc 751 -99
757 1-28 Hyderabadh,
India
GWNoA 751 -99
757 1-28 Hyderabadh,
India
GWNoLoc 751 -99
761 1-255 Niger Startdate 1991-10-25 1991-10-31
761 1-255 Niger Startprec 1 3
767 1-91 Chad Startdate 2008-02-02 2008-01-28
767 1-91 Chad Startprec 2 1
767 1-91 Chad 2008 Startprec2 3 2
768 1-209 Pakistan Startdate 2007-07-04 2007-12-23
768 1-209 Pakistan 2007-12 Startdate2 2007-07-15 2008-01-05
768 1-209 Pakistan 2007-12 Startprec2 1 12
770 1-141 Somalia Startdate 2008-01-02 2008-12-31
770 1-141 Somalia Startprec 1 5
770 1-141 Somalia 2008-12 Startdate2 2008-01-17 2008-12-31
770 1-141 Somalia Startprec 1 5
770 1-141 Somalia 2012 SideA2nd Government
of Ghana,
Government
of Nigeria
770 1-141 Somalia 2012 GWNOA2nd 452, 475
772 1-259 India Startdate 2000-06-20 2004-12-13
772 1-259 India 2008 Startdate2 2008-12-22 2008-11-09
774 1-129 Pakistan Territory Balochistan Baluchistan
776 1-260 Djibouti,
Eritrea
2008 Startdate2 2008-06-11 2008-06-12
788 1-263 India 1997 Startdate2 1997-05-12 1997-07-12
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
21
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
782 1-222 Central
African
Republic
Startdate 2009-03-20 2009-06-12
793 1-100 Nigeria Startdate 2009-06-09 2009-07-26
793 1-100 Nigeria Startprec 1 1
793 1-100 Nigeria 2012 SideA2nd Government
of Chad,
Government
of Niger
793 1-100 Nigeria 2012 Type 4 3
793 1-100 Nigeria 2012 GWNoA2nd 483, 436
795 1-25 Myanmar
(Burma)
Startdate 1977-06-01 1977-12-31
795 1-25 Myanmar
(Burma)
Startprec 1 5
798 1-264 Myanmar
(Burma)
2009 Startprec2 2 1
804 1-141 Somalia SideB Hizbul Islam Hizbul-
Islam
805 1-23 Myanmar
(Burma)
Startdate 2010-08-05 2010-11-07
806 1-267 Mauritania Startdate2 2010-09-18 2010-09-17
806 1-267 Mauritania 2010-11 Startprec2 2 11
806 1-267 Mauritania 2010 SideA2nd Niger
806 1-267 Mauritania 2010 GWNoA2nd 436
806 1-267 Mauritania 2011 SideA2nd Niger, Mali
806 1-267 Mauritania 2011 Type 3 4
806 1-267 Mauritania 2011 GWNoA2nd 436, 432
808 1-113 Sudan 2010-11 Startprec2 1 2
809 1-200 Tajikistan 2010 Startdate2 2010-09-09 2010-09-19
809 1-200 Tajikistan 2010 Startprec2 2 11
818 1-270 South Sudan Startdate 2011-08-20 2011-08-19
818 1-270 South Sudan Startprec 2 1
818 1-270 South Sudan 2011 Startdate2 2011-08-20 2011-08-19
818 1-270 South Sudan 2011 Startprec2 2 1
819 1-270 South Sudan Startdate 2011-10-09 2011-10-29
820 1-225 Ivory Coast Startdate 2011-03-13 2011-01-11
823 1-271 Libya Startdate 2011-02-28 2011-01-28
826 1-67 Myanmar
(Burma)
Startdate 2006-11-22 2011-03-13
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
22
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
826 1-67 Myanmar
(Burma)
2011 Startprec2 3 2
831 1-86 DR Congo 2012 Startprec2 4 1
836 1-177 Mali Startdate 2012-01-17 1990-06-28
836 1-177 Mali Startprec 2 1
838 1-275 Bangladesh 2005 Startdate2 2005-07-09 2005-09-07
842 1-272 India Startdate 2010-06-27 2010-06-26
843 1-209 Pakistan Startdate 2012-06-03 2012-06-02
844 1-209 Pakistan Startdate 2008-10-23 2008-10-22
Erata
In version 1-2013, the dyad Government of Pakistan – BLF was given a dyad id of 840 for the
year 2012. However, the id was not accurate. The correct dyad id for this dyad is 544.
Change in ConflictID
UCDP codes three different categories of organized violence and there has been a
problem of mix-ups with regards to conflict id:s. Thus, in order to prevent confusion, the
UCDP/PRIO Armed Conflict Dataset (which focuses on state-based conflicts) has
introduced a ‘1’ and a dash before the id. Non-state conflicts
(http://www.pcr.uu.se/research/ucdp/datasets/ucdp_non-state_conflict_dataset_/) have a
‘2’ and a dash before the id.
Name change for states
- All entries for Vietnam have been changed to Vietnam (North Vietnam).
- All entries for North Yemen have been changed to Yemen (North Yemen).
Slightly revised format for startdates
As the UCDP event coding and georeferencing process has progressed, more precise
information on conflict events have been found and systematised. To provide the user
with as precise information as possible, some changes have thus been made to the format
in which startdates are reported. For more information on this, see the codebook at
http://www.pcr.uu.se/research/ucdp/datasets/ucdp_dyadic_dataset/.
Aside from the above-mentioned change in start date format, the new and improved core
data has also made it possible to provide additional information on the start of a new
phase of conflict activity. From v1-2014, a new startdate2 is provided as soon as there
has been at least one year of inactivity in the conflict. The ‘1’ previously used to indicate
when startdate2 is in a different year than startdate has been removed.
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
23
Changes from Version 1-2012 to 1-2013
New dyads added
DyadID ConflictID Location SideB Year(s)
830 273 China ETIM 2008
833 113 Sudan SRF 2011
838 275 Bangladesh PBCP 1995
839 275 Bangladesh PBCP-Janajudhha 1995-96
844 209 Pakistan Lashkar-e-Islam 2009-10
Dyad-years added
DyadID ConflictID Location SideB Year(s)
27 91 Chad MDJT 2003
130 187 Sierra Leone RUF 2001 797 265 Myanmar LNUP 1982
Dyad-years removed
DyadID ConflictID Location SideB Year(s)
223 126 Bangladesh JSS/SB 1991
Misc. changes
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
130 187 Sierra
Leone
Startdate2 1991-04-01 1991-04-05
130 187 Sierra
Leone
Startprec2 1 2
130 187 Sierra
Leone
1991-98 SideA2nd Guinea, Nigeria
130 187 Sierra
Leone
1999 SideA2nd Ghana, Guinea,
Mali, Nigeria
130 187 Sierra
Leone
1991-98 GWNoA2nd 438, 475
130 187 Sierra
Leone
1999 GWNoA2nd 452, 438, 432,
475
130 187 Sierra
Leone
1991-99 Type 4 3
130 187 Sierra
Leone
1995 Int 2 1
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
24
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
130 187 Sierra
Leone
1998 Int 1 2
131 187 Sierra
Leone
1998 SideA2nd Guinea, Nigeria
131 187 Sierra
Leone
1999 SideA2nd Ghana, Guinea,
Mali, Nigeria
131 187 Sierra
Leone
1998 GWNoA2nd 438, 475
131 187 Sierra
Leone
1999 GWNoA2nd 452, 438, 432,
475
131 187 Sierra
Leone
1998-99 Type 4 3
131 187 Sierra
Leone
1998 Int 2 1
132 187 Sierra
Leone
Startdate 1997-05-27 1997-05-28
132 187 Sierra
Leone
Startprec 2 1
132 187 Sierra
Leone
Startdate2 1997-05-28 1997-06-03
132 187 Sierra
Leone
1997-98 SideB2nd Guinea, Nigeria
132 187 Sierra
Leone
1997-98 GWNoB2nd 438, 475
132 187 Sierra
Leone
1997-98 Type 4 3
210 141 Somalia 1990-91 SideB USC/SSA USC
210 141 Somalia 1991 SideBID 1352 1353
211 141 Somalia 1991 SideBID 1353 1352
415 200 Tajikistan 1998 SideB Forces of
Khudoberdiyev
Movement
for Peace in
Tajikistan
472 248 Thailand Startdate2 2003-10-27 2003-10-25 544 129 Baluchistan 1974-77 SideB BLF Baluch
insurgents
544 129 Baluchistan 1974-77 SideBID 2053 1128
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
25
Changes from Version 1-2011 to 1-2012
Mistake in previous version history
A new dyadid was reported for the dyad Government of Niger – UFRA. However, the id was
not accurate. The correct dyadid for this dyad should be 762.
Change of dyadID
Name of dyad DyadID used in previous version
DyadID used in present version
Government of Israel - FDLR 128 828
New dyads added
DyadID ConflictID Location SideB Year(s)
811 268 Ethiopia IGLF 1991
Dyad-years added
DyadID ConflictID Location SideB Year(s)
153 116 Uganda ADF 1999-2000
150 138 China,
Vietnam
Vietnam 1974
55 219 Ethiopia OLF 2010
Dyads removed
DyadID ConflictID Location SideB Previously active
42 86 DR Congo
(Zaire)
RCD-ML 1999-2000
Dyad-years removed
DyadID ConflictID Location SideB Year(s)
36 214 Congo Ninjas 1994
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
26
Misc. changes
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
654, 364,
378, 379,
553,
2, 103 Cambodia
(Kampuchea)
Location Cambodia
(Kampuchea
)
Cambodia
484 15 France, Thailand SideA France Thailand
484 15 France, Thailand SideB Thailand France
484 15 France, Thailand SideBID 800 220
484 15 France, Thailand GWNOA 220 800
484 15 France, Thailand GWNOB 800 220
579 16 Albania, United
Kingdom
SideA Albania United
Kingdom
579 16 Albania, United
Kingdom
SideB United
Kingdom
Albania
579 16 Albania, United
Kingdom
SideBID 200 339
579 16 Albania, United
Kingdom
GWNOA 339 200
579 16 Albania, United
Kingdom
GWNOB 200 339
669 21 Madagascar
(Malagasy)
Location Madagascar
(Malagasy)
Madagascar
474 22 Paraguay SideB Military
faction
(forces of
Andres
Rodriguez)
Military
Faction
(forces of
Andres
Rodriguez)
314 23 Myanmar Startdate 2000-01-27 2000-12-28
305 24 Myanmar Startdate 1948-05-31 1948-03-28
305 24 Myanmar Startprec 4 2
305 24 Myanmar Startdate2 1948-08-31 1948-03-28
305 24 Myanmar Startprec2 4 2
795 25 Myanmar Startdate2 1977-06-01 1977-05-01
795 25 Myanmar Startprec2 1 4
326 26 Myanmar Startprec2 2 1
619 30 Egypt, Iraq,
Israel, Jordan,
Lebanon, Syria
SideA Egypt, Iraq,
Jordan,
Lebanon,
Syria
Israel
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
27
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
619 30 Egypt, Iraq,
Israel, Jordan,
Lebanon, Syria
SideB Israel Egypt, Iraq,
Jordan,
Lebanon,
Syria
619 30 Egypt, Iraq,
Israel, Jordan,
Lebanon, Syria
SideBID 666 651, 645,
663, 660, 652
619 30 Egypt, Iraq,
Israel, Jordan,
Lebanon, Syria
GWNoA 651, 645,
663, 660,
652
666
619 30 Egypt, Iraq,
Israel, Jordan,
Lebanon, Syria
GWNoB 666 651, 645,
663, 660, 652
693 31 Malaysia 1948 SideA2nd Australia,
New Zealand
693 31 Malaysia 1948 GWNoA2
nd
900, 920
693 31 Malaysia 1949 SideA2nd Australia
693 31 Malaysia 1949 GWNoA2
nd
900
693 31 Malaysia 1948-
49,
1954-
57
Int 1 2
617 33 North Yemen 1979-
82
SideB NDF National
Democratic
Front
621 36 Guatemala Startdate2 1949-07-19 1949-07-18
621 36 Guatemala Startprec2 2 1
427 37 Israel Startprec2 1 11
453 54 India Startprec2 12 11
620 55 Egypt, France,
Israel, United
Kingdom
SideA Egypt France, Israel,
United
Kingdom
620 55 Egypt, France,
Israel, United
Kingdom
SideB France,
Israel,
United
Kingdom
Egypt
620 55 Egypt, France,
Israel, United
Kingdom
SideBID 220, 666,
200
651
620 55 Egypt, France,
Israel, United
Kingdom
GWNoA 651 220, 666, 200
620 55 Egypt, France,
Israel, United
Kingdom
GWNoB 220, 666,
200
651
722 63 Lebanon Startdate2 1975-09-09 1975-09-02
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
28
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
723 63 Lebanon Startdate 1976-01-20 1976-03-01
723 63 Lebanon Startprec2 3 2
585 64 Malaysia 1958-
60
SideA2nd Australia,
New
Zealand
585 64 Malaysia 1958-
60
GWNoA2
nd
900, 920
307 67 Myanmar 1996-
2002,
2005-
2010
SideB RCSS SSA-s
587, 588,
39, 40,
41, 646,
679, 680,
681, 651
68, 86,
254
DR Congo
(Zaire)
Location DR Congo
(Zaire)
Democratic
Republic of
Congo (Zaire)
587, 588,
39, 40,
41, 646,
679, 680,
681, 651
68, 86,
254
DR Congo
(Zaire)
SideA DR Congo
(Zaire)
Democratic
Republic of
Congo (Zaire)
46 70 Ethiopia Startprec 1 2
48 70 Ethiopia Startdate 1989-01-08 1989-01-01
48 70 Ethiopia Startprec 1 2
48 70 Ethiopia Startdate2 1989-01-08 1989-01-01
48 70 Ethiopia Startprec2 1 2
609 75 France, Tunisia SideA France Tunisia
609 75 France, Tunisia SideB Tunisia France
609 75 France, Tunisia SideBID 616 220
609 75 France, Tunisia GWNoA 220 616
609 75 France, Tunisia GWNoB 616 220
667 78 Ethiopia Startdate 1961-09-30 1961-09-30
667 78 Ethiopia Startprec 3 1
586 83 Malaysia 1965-
66
SideA2nd United
Kingdom
586 83 Malaysia 1965-
66
GWNoA2
nd
200
586 83 Malaysia 1965-
66
Type 4 3
39 86 DR Congo
(Zaire)
Startdate2 1996-10-19 1996-10-18
39 86 DR Congo
(Zaire)
Startprec2 2 1
41 86 DR Congo
(Zaire)
2001 1999 2 1
646 86 DR Congo
(Zaire)
Startdate2 2006-11-28 2006-11-25
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
29
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
679 86 DR Congo
(Zaire)
Startdate2 1964-01-31 1964-01-18
679 86 DR Congo
(Zaire)
Startprec2 2 1
12 90 Burundi Startprec2 2 1
15 90 Burundi 2001 Int 1 2
485 90 Burundi Startdate2 1965-10-19 1965-10-18
485 90 Burundi Startprec2 2 1
18 91 Chad Startprec 2 1
18 91 Chad Startprec2 2 1
20 91 Chad Startdate2 1989-11-13 1989-01-01
20 91 Chad Startprec2 11 15
22 91 Chad Startprec2 2 1
23 91 Chad Startdate 1990-03-31 1990-03-25
27 91 Chad Startdate 1999-02-05 1999-11-02
27 91 Chad Startdate2 1999-02-05 1999-12-31
633 91 Chad Startdate 2006-06-04 2006-06-03
660 91 Chad Startdate 1976-02-18 1976-02-28
660 91 Chad Startdate2 1976-02-18 1976-02-28
661 91 Chad Startdate 1977-06-21 1977-06-01
661 91 Chad Startprec 2 3
664 91 Chad 1987 SideA2nd DR Congo
(Zaire)
Democratic
Republic of
Congo (Zaire)
767 91 Chad Startdate 2008-01-28 2008-02-02
767 91 Chad Startprec 1 2
767 91 Chad Startdate2 2008-02-05 2008-02-02
777 91 Chad Startdate 1991-10-13 1991-10-14
777 91 Chad Startprec2 2 1
783 91 Chad Startdate 2009-04-19 2009-04-17
783 91 Chad Startprec 2 1
897 91 Chad Startdate2 2010-04-28 2010-04-24
897 91 Chad Startprec2 12 2
499 95 Peru Startdate 1965-06-15 1965-06-16
517 97 Cambodia
(Kampuchea),
Thailand
Location Cambodia
(Kampuchea
), Thailand
Cambodia,
Thailand
517 97 Cambodia
(Kampuchea),
Thailand
SideA Cambodia
(Kampuchea
)
Cambodia
793 100 Nigeria 2009 SideB Jama'atu
Ahlis Sunna
Lidda'awati
wal-Jihad
Boko Haram
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
30
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
363 103 Cambodia
(Kampuchea)
1974 GWNoA2
nd
817, 2
553 103 Cambodia
(Kampuchea)
1979 Int 1 2
529 104 Egypt, Israel SideA Egypt Israel
529 104 Egypt, Israel SideB Israel Egypt
529 104 Egypt, Israel SideBID 666 651
529 104 Egypt, Israel GWNoA 651 666
529 104 Egypt, Israel GWNoB 666 651
242 112 Philippines Startdate 1990-02-04 1990-01-27
242 112 Philippines Startprec 2 1
434 113 Sudan Startdate2 2003-10-04 2003-12-05
808 113 Sudan 2010 SideB SSDM/A Forces of
George Athor
540 114 Madagascar
(Malagasy)
Location Madagascar
(Malagasy)
Madagascar
540 114 Madagascar
(Malagasy)
SideA Madagascar
(Malagasy)
Madagascar
151 116 Uganda 2008-
10
SideA2nd DR Congo
(Zaire)
Democratic
Republic of
Congo (Zaire)
492 127 Cyprus, Turkey SideB Turkey Turkey/Otto
man Empire
638 129 Pakistan Startprec 2 1
638 129 Pakistan Startprec2 2 1
774 129 Pakistan Startdate2 2008-07-20 2008-07-19
774 129 Pakistan Startprec2 12 11
7 131 Angola Startprec 1 2
7 131 Angola Startprec2 1 2
568 131 Angola Startprec 1 2
568 131 Angola Startprec2 1 2
568 131 Angola 1975 SideB2nd DR Congo
(Zaire)
Democratic
Republic of
Congo (Zaire)
545 132 Cambodia
(Kampuchea),
Vietnam
Location Cambodia
(Kampuchea
), Vietnam
Cambodia,
Vietnam
545 132 Cambodia
(Kampuchea),
Vietnam
SideA Cambodia
(Kampuchea
)
Cambodia
54 133 Ethiopia Startprec 2 1
54 133 Ethiopia Startprec2 2 1
327 137 Afghanistan Startprec2 1 2
550 138 China, Vietnam Startdate2 1974-01-20 1978-01-01
567 140 Nicaragua 1977 Int 1 2
771 141 Somalia Startdate 2008-09-24 2008-09-23
771 141 Somalia Startprec 2 1
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
31
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
93 146 Liberia Startdate2 1989-12-26 1989-12-29
93 146 Liberia Startprec2 1 2
93 146 Liberia 1990 Int 1 2
94 146 Liberia Startprec 1 2
94 146 Liberia Startdate2 1990-07-28 1990-08-03
95 146 Liberia Startdate 2000-05-31 2000-07-08
95 146 Liberia Startprec 3 1
95 146 Liberia Startdate2 2000-05-31 2000-08-01
95 146 Liberia Startprec2 3 2
352 146 Liberia Startdate 2003-04-27 2003-05-01
352 146 Liberia Startprec 1 4
352 146 Liberia Startdate2 2003-07-29 2003-07-01
352 146 Liberia Startprec2 1 4
347 171 Indonesia Startdate 1989-05-31 1990-06-06
347 171 Indonesia Startprec 3 1
347 171 Indonesia Startdate2 1990-06-06 1990-06-22
347 171 Indonesia Startprec2 11 1
337 174 Indonesia Startdate2 1989-12-31 1989-10-28
337 174 Indonesia Startprec2 5 4
320 176 Iraq, Kuwait SideB2nd Sierra
Leone,
Turkey
320 176 Iraq, Kuwait GWNoB2
nd
451, 640,
696, 2
127 179 Rwanda 1990 SideA2nd DR Congo
(Zaire)
Democratic
Republic of
Congo (Zaire)
128 179 Rwanda 1996-
2000
SideB ALIR FLDR
128 179 Rwanda 1996-
2000
SideBID 2013 1380
828 179 Rwanda 2001-
02,
2009-
11
DyadID 828 128
128 179 Rwanda Startdate 2001-05-20 1996-07-12
128 179 Rwanda Startdate2 2001-05-20 1996-07-12
128 179 Rwanda 2009-
10
SideA2nd DR Congo
(Zaire
Democratic
Republic of
Congo (Zaire)
44 184 Djibouti Startdate 1997-09-30 1998-02-01
132 187 Sierra Leone Startdate 1997-05-28 1997-05-29
132 187 Sierra Leone Startdate2 1997-06-03 1997-06-12
1 191 Algeria Startdate2 1992-03-10 1992-12-01
1 191 Algeria Startprec2 12 14
1 191 Algeria 1993 Int 1 2
1 191 Algeria 1995 Int 1 2
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
32
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
2 191 Algeria Startdate 1990-12-20 1991-06-01
2 191 Algeria Startprec2 11 1
3 191 Algeria 1994 Int 1 2
292 194 Bosnia-
Herzegovina
1992-
95
SideB Serbian
Republic of
Bosnia-
Herzegovina
Serbian
Republic of
Bosnia and
Herzegovina
367 199 Moldova Startprec2 11 13
809 200 Tajikistan 2010 ConflictI
D
200 266
293 203 Bosnia-
Herzegovina
1993-
94
SideB Croatian
Republic of
Bosnia-
Herzegovina
Croatian
Republic of
Bosnia and
Herzegovina
375 207 Yemen Startprec2 2 1
113 212 Niger Startprec 1 2
45 215 Eritrea, Ethiopia Startprec2 1 2
363 221 Uzbekistan 2000 SideA2nd Kyrgyzstan Kyrgyz
Republic
17 222 Central African
Republic
Startdate2 2001-06-03 2001-06-01
287 222 Central African
Republic
Startdate 2002-09-20 2002-10-30
628 222 Central African
Republic
Startdate2 2006-11-28 2006-11-27
341 223 Macedonia, FYR Location Macedonia,
FYR
Macedonia
341 223 Macedonia, FYR SideA Macedonia,
FYR
Macedonia
360 224 United States of
America
2008 SideA2nd Czech
Republic
360 224 United States of
America
2008 GWNoA2
nd
316
360 224 United States of
America
2009 SideA2nd Czech
Republic,
Denmark
360 224 United States of
America
2009 GWNoA2
nd
316, 390
360 224 United States of
America
2010 SideA2nd Afghanistan
360 224 United States of
America
2010 GWNoA2
nd
700
89, 91,
245, 439
225 Ivory Coast Location
Ivory Coast Cote d’Ivoire
89, 91,
245, 439
225 Ivory Coast SideA Ivory Coast Cote d’Ivoire
91 225 Ivory Coast Startprec 1 2
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
33
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
91 225 Ivory Coast Startdate2 2002-11-28 2002-12-01
91 225 Ivory Coast Startprec2 1 4
245 225 Ivory Coast Startdate 2002-12-03 2003-01-02
245 225 Ivory Coast Startprec2 12 2
439 225 Ivory Coast Startdate2 2004-11-05 2004-11-04
439 225 Ivory Coast Startprec2 1 2
439 225 Ivory Coast 2004 SideB FRCI FN
332 226 Australia, Iraq,
United Kingdom,
United States of
America
SideA Australia,
United
Kingdom,
United
States of
America
Iraq
332 226 Australia, Iraq,
United Kingdom,
United States of
America
SideB Iraq Australia,
United
Kingdom,
United States
of America
332 226 Australia, Iraq,
United Kingdom,
United States of
America
SideBID 645 900, 200, 2
332 226 Australia, Iraq,
United Kingdom,
United States of
America
GWNoA 900, 200, 2 645
332 226 Australia, Iraq,
United Kingdom,
United States of
America
GWNoB 645 900, 200, 2
309 227 India Startdate2 1989-10-10 1989-03-16
313 227 India Startdate 1992-11-21 1992-01-01
473 250 Nigeria Startdate 2004-06-04 2004-06-05
473 250 Nigeria Startdate2 2004-06-04 2004-06-05
651 254 DR Congo Startprec2 12 1
749 255 Niger Startdate2 2007-04-30 2007-07-01
762 255 Niger Startprec 2 1
773 257 Russia (Soviet
Union)
2007-
10
SideB Forces of
the
Caucasus
Emirate
Caucasus
Emirate
791 262 Ethiopia Startdate2 1983-03-31 1983-04-01
788 263 India Startdate2 1997-07-12 1997-07-13
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
34
New format for startdates
In order to streamline UCDP’s data outputs with regard to the format for writing startdates,
this has been altered in version 1-2012 of the dataset. In previous versions, a startprecision of
3 (meaning that day is unknown; month and year are precisely coded) or 4 (month is
assigned; year is coded precisely) meant that the day was set to the first of that month. In this
version, however, this has been changed to the last of the given month. Furthermore, while
in previous versions a startprecision of 5 (day and month are unknown, year is coded
precisely), 6 (year is assigned) or 7 (year of first death is missing) meant that the date was set
to 1 January, this has now been changed to 31 December.
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
35
Changes from Version 1-2010 to 1-2011
Dyads removed
DyadID
ConflictID
Location SideB Previously active
670 78 Ethiopia ELF–PLF 1977
114 112 Niger FARS 1997
Dyad-years removed
DyadID
Conflict ID
Location SideB Year(s)
283* 133 Ethiopia AIAI 1995
245 225 Ivory Coast MJP 2002
New dyads added
Dyad ID
Conflict ID
Location SideB Year(s)
810 50 Argentina Military faction (forces of Samuel
Toranzo Calderón)
1955
Dyad-years added
Dyad ID
Conflict ID
Location SideB Year(s)
498 94 Indonesia OPM 1984
54 133 Ethiopia ONLF 1998, 2003
283* 133 Ethiopia AIAI 1993
336 152 India UNLF 2000
687 157 Sri Lanka
(Ceylon)
EPRLF 1989
55 219 Ethiopia OLF 1986
128 179 Rwanda FDLR 1996
Misc. changes
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
673 22 Paraguay Startdate 1947-03-07 1947-03-01
673 22 Paraguay Startprec 2 4
795 25 Myanmar Startdate2 1977-05-01 1977-01-01
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
36
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
795 25 Myanmar Startprec 5 6
795 25 Myanmar Startprec2 4 6
451 29 India SideB CPI–
Maoist
CPI–M
784 33 Yemen 2009 SideA2nd United
States of
America
784 33 Yemen 2009 Type 4 3
784 33 Yemen 2009 GWNOA2nd 2
590 50 Argentina 1955 Startdate 1955-09-16 1955-06-16
590 50 Argentina 1955 Startdate2 1955-09-19 1955-06-16
736 65 Laos 1960 Type 4 3
53 78 Ethiopia 1977-78 SideA2nd South
Yemen
53 78 Ethiopia 1977-78 Type 4 3
53 78 Ethiopia 1977-78 GWNOA2nd 680
667 78 Ethiopia 1977-78 SideA2nd South
Yemen
667 78 Ethiopia 1977-78 Type 4 3
667 78 Ethiopia 1977-78 GWNOA2nd 680
672 80 Venezuela Startdate 1962-06-03 1962-07-03
672 80 Venezuela Startprec 2 1
672 80 Venezuela Startdate2 1962-06-03 1962-07-03
672 80 Venezuela Startprec2 2 1
661 91 Chad Startdate2 1977-01-01 1978-04-19
661 91 Chad Startprec2 5 11
516 101 South Africa Startdate2 1966-11-01 1966-01-01
516 101 South Africa Startprec2 4 5
553 103 Cambodia Startprec2 2 1
556 118 Uganda Startdate2 1979-04-07 1979-03-31
700 118 Uganda 1979 Intensity 1 2
283* 133 Ethiopia SideB AIAI Al-Itahad
al-Islami
283* 133 Ethiopia Startdate 1993-10-13 1995-01-07
283* 133 Ethiopia Startprec 1 3
283* 133 Ethiopia Startdate2 1993-10-13 1995-01-07
283* 133 Ethiopia Startprec2 1 3
522 133 Ethiopia 1976 Type 3 4
760 137 Afghanistan 1990-91 GWNOA2nd 365
208 141 Somalia Startprec1 3 1
128 179 Rwanda 2009 Type 4 3
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
37
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
251 186 Haiti SideB Military
faction
(forces of
Raol
Cédras)
Military
faction
(forces of
Raol
Cedras)
714 187 Sierra Leone 2000 SideA2nd United
Kingdom
3 191 Algeria 1993 Intensity 1 2
3 191 Algeria 1999 Intensity 1 2
4 191 Algeria 2009 Type 4 3
113 212 Niger Startdate2 1995-07-10 1995-07-20
55 219 Ethiopia 1980 SideA2nd Cuba
55 219 Ethiopia 1980 GWNOA2nd 40
55 219 Ethiopia 1980 Type 4 3
444 221 Uzbekistan 2004 SideA2nd Kyrgyz
Republic
444 221 Uzbekistan 2004 GWNoA2nd 703
17 222 Central
African
Republic
Startdate 2001-05-27 2001-10-01
17 222 Central
African
Republic
Startprec1 1 3
17 222 Central
African
Republic
Startdate2 2001-06-01 2001-10-01
17 222 Central
African
Republic
Startprec2 2 3
245 225 Ivory Coast Startdate 2002-12-03 2002-12-01
245 225 Ivory Coast Startprec 2 4
245 225 Ivory Coast Startdate2 2003-01-06 2002-12-01
245 225 Ivory Coast Startprec2 2 4
332 226 Australia, Iraq,
United
Kingdom,
United States
of America
Region 2 3
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
38
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
773 257 Russia (Soviet
Union)
SideB Caucasus
Emirate
Forces of
Caucasus
Emirate
796 261 Ethiopia 1980 SideA2nd Cuba
796 261 Ethiopia 1980 Type 4 3
796 261 Ethiopia 1980 GWNO2nd 40
797 265 Myanmar Startdate 1973-01-11 1973-01-10
797 265 Myanmar Startprec 2 1
797 265 Myanmar Startdate2 1973-02-01 1973-01-06
797 265 Myanmar Startprec 2 4
Change of DyadID
Name of dyad DyadID used in previous version
DyadID used in present version
Government of Israel - PLO 697 781
Government of North Vietnam –
Government of South Vietnam
572 803
Government of Ethiopia - AIAI 447 283
Government of Niger - FLAA 110 761
Government of Niger - UFRA 112 752
Government of India - KNF 338 788
New variable included
Version 4-2011 of the dataset includes a new variable: SideBID. SideBID is the unique
identifier of the actor on side B in the conflict. For government actors, the Gleditsch & Ward
(2007) country codes are used. For non-state actors, the ID is taken from the UCDP Actor
Dataset (http://www.pcr.uu.se/research/ucdp/datasets/).
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
39
Changes from Version 1-2009 to 1-2010
Dyads removed
Dyad ID
Conflict ID
Location SideB Previously active
682 25 Myanmar Arakan Insurgents 1948-88
637 113 Sudan SAF 1996
557 118 Uganda Military faction (Mbarara-based
troops)
1978
569 131 Angola Military faction (forces of Nito
Alves & José van Dumen)
1977
477 137 Afghanistan Military faction 1992
523 141 Somalia Military faction (forces of
Abdulaahi Yusuf)
1978
549 142 Equatorial
Guinea
Military faction (Forces of
Teodoro Obiang Nguema
Mbasogo)
1979
471 163 Togo Military faction (forces loyal to
Gnassingbe Eyadema)
1991
775 222 Central
African
Republic
Military faction (forces of Cyriac
Souke)
1996-97
Dyad-years removed
Dyad ID
Conflict ID
Location SideB Year(s)
306 23 Myanmar KNU 1949-65, 1999
794 25 Myanmar Arakan insurgents 1948-88
694 36 Guatemala FAR II 1968-69
696 37 Israel Non PLO groups 1974-88
380 37 Israel PIJ 1992
589 71 Ethiopia,
Somalia
Somalia 1960, 1973,
1983, 1987
279 74 Iraq KDP 1992-93
285 74 Iraq PUK 1993
42 86 DRC RCD–ML 2001
517 97 Cambodia,
Thailand
Thailand 1966
641 113 Sudan NDA 2002
563 124 North Yemen,
South Yemen
South Yemen 1978
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
40
Dyad ID
Conflict ID
Location SideB Year(s)
447 211 Ethiopia al-Itahad al-Islami 1995-96, 1999
422 137 Afghanistan Junbish-i Milli-yi Islami 1992
515 139 India TNV 1978
231 140 Nicaragua Contras/FDN 1981
209 141 Somalia SSDF 1991
93 146 Liberia NPFL 1991-95
94 146 Liberia INPFL 1991-95
338 152 India KNF 1997
559 162 Suriname SLA 1986, 1988
51 168 Ethiopia ALF 1989-91
113 212 Niger FDR 1996
189 214 Congo Cobras 1993
New dyads added
Dyad ID
Conflict ID
Location SideB Year(s)
790 23 Myanmar KNUP 1949-75
794 25 Myanmar RPF 1973-78
799 25 Myanmar APLP 1948-57, 1964-
72
800 25 Myanmar Mujahid Party 1948-61
801 25 Myanmar ANLP 1964-72
802 25 Myanmar CPA 1964-73
780 37 Israel Rejectionist Front 1974-88
792 133 Ethiopia Ogaden Liberation Front 1964
796 261 Ethiopia SALF 1977-80
791 262 Ethiopia SLM 1983
797 265 Myanmar LNUP 1973-81
Dyad-years added
Dyad ID
Conflict ID
Location SideB Year(s)
220 10 Philippines Military Faction (forces of
Honasan, Abenina & Zumel)
1987
617 33 North Yemen National Democratic Front 1979
624 36 Guatemala FAR I 1963
311 56 Myanmar KNPP 1987
589 71 Ethiopia,
Somalia
Somalia 1977-78, 1980
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
41
Dyad ID
Conflict ID
Location SideB Year(s)
14 90 Burundi CNDD–FDD 1998
495 92 Colombia M–19 1979
343 92 Colombia EPL 1984, 1990
342 92 Colombia ELN 1985
498 94 Indonesia OPM 1981
319 95 Peru MRTA 1990
553 103 Cambodia KNUFNS 1979
706 118 Uganda UPDA 1987
151 118 Uganda LRA 2008
561 121 Oman PFLO 1969-71
447 133 Ethiopia al-Itahad al-Islami 1995-96, 1999
760 137 Afghanistan Hizb-i Islami-yi Afghanistan -
Khalis faction
1989-91
732 137 Afghanistan Mahaz-i Milli-yi Islami-yi
Afghanistan
1989
567 140 Nicaragua FSLN 1977
231 140 Nicaragua Contras/FDN 1990
366 147 Spain ETA 1978-79, 1982,
1985-86
361 193 Azerbaijan Republic of Nagorno-Karabakh 1991
113 212 Niger FDR 1995
338 263 India KNF 1997
Misc. changes
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
657 5 Indonesia 1946-49 SideB Indonesian
People's Army
Indonesian
Peoples Army
469 10 Philippines 1946-54 Side B Huk HUK
217 10 Philippines 1987 Intensity 2 1
220 10 Philippines Startdate 1987-01-27 1989-12-01
220 10 Philippines Startprec 1 2
220 10 Philippines Startdate2 1987-08-29 1989-12-02
474 22 Paraguay SideB Military
faction (forces
of Andres
Rodriguez)
Military
faction (forces
of General
Rodriguez)
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
42
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
671 22 Paraguay SideB Military
faction (forces
of Alfredo
Stroessner)
Military
faction (forces
of General
Alfredo
Stroessner)
306 23 Myanmar Startdate 1966-01-01 1949-01-01
306 23 Myanmar Startprec 5 4
306 23 Myanmar Startdate2 1966-01-01 1949-02-01
306 23 Myanmar Startprec2 5 4
306 23 Myanmar 1971 Intensity 1 2
306 23 Myanmar 1989 Intensity 2 1
689 29 India Startdate 1948-05-01 1948-09-18
689 29 India Startprec 1 2
615 33 North
Yemen
Startprec 4 2
615 33 North
Yemen
Startprec2 4 2
304 34 Myanmar 1972-75 Intensity 1 2
624 36 Guatemala Startdate 1963-03-22 1965-01-01
624 36 Guatemala Startprec 1 5
624 36 Guatemala Startdate2 1963-07-01 1965-01-01
624 36 Guatemala Startprec2 3 5
694 36 Guatemala Startdate 1970-01-01 1968-01-01
694 36 Guatemala Startdate2 1970-01-01 1968-01-01
625 36 Guatemala Startdate 1975-05-01 1975-06-07
625 36 Guatemala Startprec 3 2
697 37 Israel Startdate 1965-02-01 1965-01-01
697 37 Israel Startprec 3 5
697 37 Israel SideB PLO PLO groups
780 37 Israel 1982 SideB2nd Syria
780 37 Israel 1982 Type 3 4
697 37 Israel 1982 SideB2nd Syria
697 37 Israel 1982 Type 3 4
697 37 Israel 1982 Intensity 2 1
377 37 Israel Startdate2 1990-12-30 1989-01-01
426 37 Israel Startdate 2001-11-29 2001-11-06
426 37 Israel Startdate2 2002-03-05 2002-03-26
629 37 Israel Startdate 2001-12-12 2002-02-14
380 37 Israel Startdate2 1995-04-09 1992-08-02
599 43 Thailand Startdate 1966-01-01 1968-11-01
599 43 Thailand Startprec 5 4
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
43
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
590 50 Argentina Startprec2 1 2
286 54 India Startdate2 1992-08-05 1992-07-01
286 54 India Startprec2 11 13
453 54 India Startdate 1994-08-26 1998-04-19
718 62 Iraq SideB Military
faction (forces
of Abdul
Wahab al-
Shawaf)
Military
faction (forces
of Colonel
Abdul Wahab
al-Shawaf)
719 62 Iraq SideB Military
faction (forces
of Abd as-
Salam Arif)
Military
faction (forces
of Brigadier
Arif)
298 62 Iraq 1991 Intensity Minor War
448 62 Iraq Startdate2 2004-06-19 2004-06-24
448 62 Iraq 2004 Intensity War Minor
578 62 Iraq Startdate 2004-03-31 2004-10-03
383 63 Lebanon Startprec2 12 11
585 64 Malaysia Startdate 1957-01-01 1957-08-31
585 64 Malaysia Startprec 5 2
755 70 Ethiopia Startdate 1960-12-17 1960-12-14
755 70 Ethiopia Startdate2 1960-12-17 1960-12-14
50 70 Ethiopia Startdate 1975-01-01 1974-12-01
50 70 Ethiopia Startprec 5 4
754 70 Ethiopia Startdate 1977-01-01 1977-01-16
754 70 Ethiopia Startprec 3 1
754 70 Ethiopia Startdate2 1977-01-01 1977-01-31
754 70 Ethiopia Startprec2 3 2
589 71 Ethiopia,
Somalia
Startdate 1964-02-10 1960-07-01
589 71 Ethiopia,
Somalia
Startprec 2 4
589 71 Ethiopia,
Somalia
Startdate2 1964-02-13 1960-08-01
589 71 Ethiopia,
Somalia
1964 Startprec2 2 4
349 72 Nepal Startdate 1996-02-25 1996-02-27
349 72 Nepal Startdate2 1996-08-23 1996-07-13
279 74 Iraq 1991 Intensity 1 2
285 74 Iraq 1991 Intensity 1 2
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
44
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
655 76 Brunei Startdate 1962-12-08 1962-02-08
655 76 Brunei Startdate2 1962-12-08 1962-02-08
53 78 Ethiopia 1991 Intensity 2 1
679 86 DRC Startdate 1964-01-18 1964-05-01
679 86 DRC Startdate2 1964-01-18 1964-05-01
680 86 DRC Startdate 1967-07-05 1967-07-11
680 86 DRC Startdate2 1967-07-05 1967-07-11
681 86 DRC Startdate 1977-03-08 1977-08-17
681 86 DRC Startdate2 1977-04-01 1977-08-17
681 86 DRC Startprec2 3 1
681 86 DRC 1977 SideA2nd Morocco,
Uganda
681 86 DRC 1977 Type 4 3
39 86 DRC 1996 Intensity 2 1
41 86 DRC Startdate 1998-11-01 1998-11-07
41 86 DRC Startdate2 1998-11-01 1998-11-07
40 86 DRC Startdate 1998-08-01 1998-08-04
40 86 DRC Startdate2 1998-08-03 1998-08-11
11 90 Burundi Startdate2 1991-11-27 1991-11-26
11 90 Burundi Startprec2 2 1
13 90 Burundi Startdate2 1997-10-27 1997-11-21
15 90 Burundi Startdate 1997-03-14 1995-01-01
15 90 Burundi Startprec 1 5
15 90 Burundi Startdate2 1997-03-14 1997-01-01
15 90 Burundi Startprec2 1 15
14 90 Burundi Startdate 1998-06-07 1998-07-27
14 90 Burundi Startprec 2 1
14 90 Burundi Startdate2 1998-11-22 1999-01-30
14 90 Burundi Startprec2 1 11
20 91 Chad Startdate 1987-11-22 1987-11-27
22 91 Chad Startdate 1992-06-21 1992-06-22
21 91 Chad Startdate2 1992-08-17 1992-08-31
21 91 Chad Startprec2 1 2
26 91 Chad Startdate2 1997-10-30 1997-11-18
26 91 Chad Startprec2 11 12
237 92 Colombia 1994 Intensity 2 1
235 95 Peru 1982 Intensity 1 2
235 95 Peru 1992 Intensity 1 2
235 95 Peru 1993 Intensity 1 2
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
45
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
572 96 North
Vietnam,
South
Vietnam
1965 SideB2nd Philippines,
Thailand
572 96 North
Vietnam,
South
Vietnam
1966 SideB2nd Thailand
572 96 North
Vietnam,
South
Vietnam
1970-
1972
SideB2nd Philippines
572 96 North
Vietnam,
South
Vietnam
1973 SideB2nd Australia,
New Zealand,
Philippines,
Thailand
572 96 North
Vietnam,
South
Vietnam
1974 SideB2nd Australia,
New Zealand,
Philippines,
South Korea ,
Thailand,
USA
572 96 North
Vietnam,
South
Vietnam
1975 SideB2nd Australia,
New Zealand,
Philippines,
South Korea ,
Thailand,
USA
517 97 Cambodia,
Thailand
Startdate 1975-12-15 1966-06-12
517 97 Cambodia,
Thailand
Startprec 2 1
517 97 Cambodia,
Thailand
Startdate2 1977-01-01 1966-06-12
517 97 Cambodia,
Thailand
Startprec2 5 1
516 101 South Africa Startdate2 1966-01-01 1966-08-26
516 101 South Africa Startprec2 5 1
516 101 South Africa 1978 Intensity 2 1
364 103 Cambodia Startdate 1967-04-01 1967-04-02
364 103 Cambodia Startprec 3 1
364 103 Cambodia Startdate2 1967-05-01 1967-04-02
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
46
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
364 103 Cambodia Startprec2 3 1
553 103 Cambodia Startdate 1978-12-01 1978-01-01
553 103 Cambodia Startprec 3 5
553 103 Cambodia Startdate2 1978-12-30 1978-12-01
553 103 Cambodia Startprec2 1 3
364 103 Cambodia 1979 SideA2nd Laos
57 111 Guinea Startdate2 2000-09-17 2000-09-01
57 111 Guinea Startprec2 1 3
249 112 Philippines Startdate 1993-05-03 1992-05-01
249 112 Philippines Startprec 1 3
249 112 Philippines Startdate2 1993-05-07 1993-05-03
249 112 Philippines Startprec2 1 11
645 113 Sudan Startdate 1996-04-20 1996-10-08
645 113 Sudan Startdate2 1996-04-20 1996-12-28
434 113 Sudan Startdate 2003-10-04 2003-12-05
631 113 Sudan Startdate 2006-01-23 2006-02-14
631 113 Sudan Startdate2 2006-02-14 2006-10-10
256 117 Sri Lanka Startdate2 1971-04-30 1971-04-05
554 118 Uganda Startdate2 1971-01-29 1971-01-25
554 118 Uganda Startprec2 2 1
701 118 Uganda Startdate 1973-03-01 1979-01-20
701 118 Uganda Startprec 3 2
701 118 Uganda Startdate2 1979-03-20 1979-01-21
701 118 Uganda Startprec2 12 2
556 118 Uganda Startdate 1979-03-31 1979-03-28
556 118 Uganda Startdate2 1979-03-31 1979-03-28
703 118 Uganda Startdate 1980-08-01 1980-04-01
574 118 Uganda Startdate2 1981-08-10 1981-03-16
574 118 Uganda Startprec2 1 2
704 118 Uganda Startdate 1981-03-01 1981-01-01
704 118 Uganda Startprec 4 5
706 118 Uganda Startdate 1986-08-10 1986-06-22
706 118 Uganda Startprec 1 2
706 118 Uganda Startdate2 1986-08-10 1986-08-19
706 118 Uganda Startprec2 1 2
514 120 El Salvador Startdate 1972-03-25 1972-04-25
514 120 El Salvador Startdate2 1972-03-25 1972-04-25
510 120 El Salvador Startdate 1973-03-02 1972-03-02
510 120 El Salvador Startdate2 1979-01-01 1979-10-16
510 120 El Salvador Startprec2 15 12
508 120 El Salvador Startdate2 1979-09-14 1979-09-23
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
47
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
508 120 El Salvador Startprec2 11 12
561 121 Oman Startdate 1968-10-01 1968-01-01
561 121 Oman Startprec 3 5
561 121 Oman Startdate2 1969-01-01 1972-01-01
561 121 Oman 1972 SideA2nd Jordan, Iran
561 121 Oman 1973 SideA2nd Jordan
561 121 Oman 1974 SideA2nd Jordan
560 122 Zimbabwe Startdate 1966-04-29 1966-04-28
560 122 Zimbabwe Startdate2 1973-04-04 1973-02-23
560 122 Zimbabwe 1975 SideA2nd South Africa
560 122 Zimbabwe 1975 Type 4 3
543 128 Iran, Iraq Startdate2 1974-02-10 1974-01-01
543 128 Iran, Iraq Startprec2 11 15
638 129 Pakistan Startdate 2005-12-19 2005-12-19
638 129 Pakistan Startprec2 1 2
435 130 Eritrea Startdate2 1997-04-01 1997-04-30
435 130 Eritrea Startprec2 13 11
7 131 Angola 1980-84,
1986
SideB2nd South Africa
7 131 Angola 1991 Intensity 1 2
545 132 Cambodia,
Vietnam
Startdate2 1975-01-01 1975-05-01
545 132 Cambodia,
Vietnam
Startprec2 5 1
522 133 Ethiopia Startdate 1976-01-04 1976-09-01
522 133 Ethiopia Startprec 2 3
522 133 Ethiopia Startdate2 1976-10-01 1976-09-01
522 133 Ethiopia 1976 SideA2nd Cuba
522 133 Ethiopia 1977-78 SideA2nd South Yemen
522 133 Ethiopia 1978 SideB2nd Somalia
98 135 Morocco Startprec 1 4
98 135 Morocco Startdate2 1975-11-04 1975-09-01
98 135 Morocco Startprec 1 4
98 135 Morocco 1979-80 Intensity 2 1
99 136 Mozambique 1986-88 SideA2nd Tanzania
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
48
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
727 137 Afghanistan 1978 SideB PDPA Hizb-i
Demokratik-i
Khalq-i
Afghanistan
411 137 Afghanistan Startdate 1975-07-01 1975-06-01
412 137 Afghanistan Startdate 1980-03-01 1980-01-01
412 137 Afghanistan Startprec 3 7
412 137 Afghanistan Startdate2 1980-03-01 1980-01-01
412 137 Afghanistan Startprec2 3 5
760 137 Afghanistan Startprec 5 7
735 137 Afghanistan Startdate 1981-07-16 1981-01-01
735 137 Afghanistan Startprec 2 7
735 137 Afghanistan Startdate2 1981-07-16 1981-01-01
735 137 Afghanistan Startprec2 2 5
737 137 Afghanistan 1984 SideB Harakat-i
Islami-yi
Afghanistan
Harakat-i
Islami
411 137 Afghanistan 1989 Intensity 2 1
412 137 Afghanistan 1990,
1993
Intensity 2 1
413 137 Afghanistan 1990,
1992,
1994
Intensity 1 2
411 137 Afghanistan 1990,
1992
Intensity 1 2
422 137 Afghanistan 1993 Intensity 1 2
422 137 Afghanistan Startdate 1993-03-08 1992-01-01
422 137 Afghanistan Startprec 1 5
422 137 Afghanistan Startdate2 1993-09-26 1992-01-01
422 137 Afghanistan Startprec2 1 5
412 137 Afghanistan 1994 Intensity 1 2
327 137 Afghanistan 1995-96 Intensity 2 1
515 139 India Startdate 1979-07-09 1978-01-01
515 139 India Startprec 1 4
515 139 India Startdate2 1979-01-01 1978-01-01
515 139 India Startprec2 5 4
269 139 India Startdate 1992-10-11 1993-09-20
269 139 India Startprec 2 1
567 140 Nicaragua Startdate 1977-10-10 1978-02-03
231 140 Nicaragua Startdate 1982-03-18 1981-12-01
231 140 Nicaragua Startprec 1 3
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
49
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
231 140 Nicaragua Startdate2 1982-04-17 1981-12-01
231 140 Nicaragua Startprec2 1 3
207 141 Somalia Startdate 1982-04-01 1983-01-01
207 141 Somalia Startprec 3 7
207 141 Somalia Startdate2 1983-02-05 1983-01-01
207 141 Somalia Startprec2 11 15
208 141 Somalia Startdate 1989-04-01 1989-07-31
210 141 Somalia Startdate 1990-11-13 1989-01-01
210 141 Somalia Startprec 1 5
210 141 Somalia Startdate2 1990-11-18 1990-01-01
210 141 Somalia Startprec2 2 15
211 141 Somalia Startdate 1991-09-05 1991-09-01
211 141 Somalia Startprec 2 3
211 141 Somalia Startdate2 1991-09-07 1991-09-01
211 141 Somalia Startprec2 2 3
546 144 Iran Startdate 1979-05-30 1979-10-03
546 144 Iran Startdate2 1979-05-31 1979-10-03
548 145 Saudi Arabia Startdate 1979-11-20 1979-11-25
548 145 Saudi Arabia Startdate2 1979-11-20 1979-11-25
366 147 Spain Startdate2 1978-10-22 1980-10-03
551 148 Tunisia Startdate2 1980-01-28 1980-01-27
551 148 Tunisia Startprec 2 1
558 150 South Africa Startdate 1978-02-01 1976-01-01
558 150 South Africa Startprec 1 6
558 150 South Africa Startdate2 1981-08-07 1981-01-01
558 150 South Africa Startprec2 11 15
489 151 Argentina,
United
Kingdom
Startdate2 1982-05-02 1982-04-02
764 152 India Startprec 7 6
535 154 Chad,
Nigeria
Startdate 1983-04-18 1983-04-01
535 154 Chad,
Nigeria
Startprec 1 3
535 154 Chad,
Nigeria
Startdate2 1983-04-24 1983-04-01
535 154 Chad,
Nigeria
Startprec2 1 3
526 157 Sri Lanka Startdate 1978-05-06 1975-07-27
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
50
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
538 160 Burkina
Faso, Mali
Startdate2 1985-12-26 1985-12-25
538 160 Burkina
Faso, Mali
Startprec2 2 1
537 161 Laos,
Thailand
Startdate 1982-06-16 1984-05-01
537 161 Laos,
Thailand
Startprec 1 3
559 162 Suriname Startdate 1986-08-21 1986-07-01
559 162 Suriname Startprec 1 4
559 162 Suriname Startdate2 1987-10-12 1986-07-01
559 162 Suriname Startprec2 1 3
559 162 Suriname SideB SLA SLA/Jungle
Commando
296 170 India Startdate2 1990-01-01 1990-05-29
296 170 India Startprec2 15 12
347 171 Indonesia Startdate 1990-06-06 1989-05-01
347 171 Indonesia Startprec 1 2
347 171 Indonesia Startdate2 1990-06-22 1990-09-08
347 171 Indonesia Startprec 1 11
347 171 Indonesia 1990 Intensity 1 2
320 176 Iraq, Kuwait 1990 Intensity 2 1
111 178 Niger Startdate 1994-01-19 1994-02-23
127 179 Rwanda 1990 Intensity 2 1
127 179 Rwanda 1991-92 Intensity 1 2
127 179 Rwanda 1994 Intensity 2 1
127 179 Rwanda Startdate2 1990-10-03 1990-10-03
370 181 Russia
(Soviet
Union)
Startdate 1990-01-01 1988-11-01
370 181 Russia
(Soviet
Union)
Startprec 4 3
219 183 Trinidad and
Tobago
Startprec2 2 1
43 184 Djibouti Startprec2 2 1
239 185 Georgia Startdate 1991-12-22 1991-09-25
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
51
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
239 185 Georgia Startdate2 1991-12-28 1991-12-23
239 185 Georgia 1991-92 SideB National
Guard and
Mkhedrioni
Anti-
government
alliance
289 185 Georgia Startdate2 1992-03-16 1992-06-14
130 187 Sierra Leone Startdate2 1991-04-05 1991-04-01
130 187 Sierra Leone Startprec2 2 3
130 187 Sierra Leone 1999 Intensity 1 2
131 187 Sierra Leone Startdate2 1997-05-25 1997-05-30
131 187 Sierra Leone Startprec2 1 2
131 187 Sierra Leone 1999 Intensity 2 1
132 187 Sierra Leone Startdate 1997-05-29 1997-05-28
281 189 Serbia
(Yugoslavia)
Startdate2 1991-06-28 1991-07-04
281 189 Serbia
(Yugoslavia)
Startprec2 1 2
272 190 Serbia
(Yugoslavia)
Startdate 1991-07-15 1991-07-22
272 190 Serbia
(Yugoslavia)
Startdate2 1991-07-27 1991-08-02
2 191 Algeria Startdate2 1991-12-09 1991-12-01
2 191 Algeria Startprec2 1 3
3 191 Algeria Startdate 1992-02-10 1992-03-01
3 191 Algeria Startprec 1 3
3 191 Algeria Startdate2 1993-01-01 1993-12-14
3 191 Algeria Startprec2 15 14
4 191 Algeria Startdate2 1999-04-04 1999-03-01
4 191 Algeria Startprec2 11 13
191 192 Angola Startdate 1991-05-18 1991-01-01
191 192 Angola Startprec 1 7
191 192 Angola Startdate2 1991-06-03 1991-06-01
191 192 Angola Startprec2 2 3
190 192 Angola Startdate 1992-01-01 1994-01-01
361 193 Azerbaijan Startdate 1991-12-29 1991-12-01
361 193 Azerbaijan Startprec 1 3
361 193 Azerbaijan Startdate2 1991-12-30 1992-01-01
361 193 Azerbaijan Startprec2 1 15
292 194 Bosnia and
Herzegovina
Startdate2 1992-04-30 1992-05-01
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
52
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
292 194 Bosnia and
Herzegovina
Startprec2 2 3
292 194 Bosnia and
Herzegovina
1994 Intensity 2 1
292 194 Bosnia and
Herzegovina
1995 Intensity 2 1
303 195 Croatia Startdate 1992-04-29 1992-05-01
303 195 Croatia Startprec 1 3
303 195 Croatia Startdate2 1992-05-17 1992-07-01
303 195 Croatia Startprec 1 4
367 199 Moldova SideB PMR Dniestr
Republic
353 200 Tajikistan Startdate 1992-05-05 1992-05-10
353 200 Tajikistan Startdate2 1992-05-10 1992-06-29
353 200 Tajikistan Startprec2 2 1
362 201 Azerbaijan Startdate2 1993-06-06 1993-06-04
294 202 Bosnia and
Herzegovina
Startdate 1993-07-21 1993-10-03
294 202 Bosnia and
Herzegovina
Startdate2 1993-10-05 1993-10-07
293 203 Bosnia and
Herzegovina
Startdate2 1993-01-15 1993-04-30
293 203 Bosnia and
Herzegovina
Startprec2 2 1
348 206 Russia
(Soviet
Union)
Startdate 1994-11-25 1994-12-11
348 206 Russia
(Soviet
Union)
Startdate2 1994-11-26 1994-12-11
348 206 Russia
(Soviet
Union)
2001 Intensity 1 2
375 207 Yemen Startdate 1994-02-21 1994-02-25
16 210 Cameroon,
Nigeria
Startdate2 1996-05-07 1996-04-01
16 210 Cameroon,
Nigeria
Startprec2 12 13
113 212 Niger Startdate2 1995-07-20 1996-02-06
113 212 Niger Startprec2 1 12
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
53
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
189 214 Congo Startdate 1997-06-05 1993-12-10
189 214 Congo Startdate2 1997-06-06 1993-12-10
189 214 Congo SideA2nd Angola, Chad
45 215 Eritrea,
Ethiopia
Territory Common
border
Badme
295 218 Serbia
(Yugoslavia)
Startdate2 1998-03-06 1998-03-01
295 218 Serbia
(Yugoslavia)
Startprec2 11 13
89, 91,
245,
439
225 Cote d’Ivoire Location,
SideA
Cote d’Ivoire Cote D’Ivoire
245 225 Cote d’Ivoire Startdate 2002-12-01 2002-11-28
245 225 Cote d’Ivoire Startprec 4 2
309 227 India Startdate 1989-02-18 1989-03-16
309 227 India Startprec2 2 1
446 249 Nigeria Startdate 2003-12-01 2004-12-01
446 249 Nigeria Startadate2 2004-09-23 2004-12-01
446 249 Nigeria Startprec2 1 3
745 253 Mauretania Startdate 1975-12-10 1975-12-15
745 253 Mauretania Startprec 1 2
745 253 Mauretania Startdate2 1975-12-19 1975-12-15
745 253 Mauretania 1977 SideA2nd France
745 253 Mauretania 1977 Type 3 4
758 256 Afghanistan,
Russia
(Soviet
Union)
Startdate 1979-12-27 1979-12-24
A note on some name changes
In version 1-2010, an effort has been made to streamline the names of the states included.
Furthermore, UCDP has continued the effort to include easily understood and commonly
known names, wherefore for instance the name North Korea is used instead of People’s
Republic of Korea. In previous versions this has not been done full out, but in version 1-2010
we have tried to make all the necessary changes. It should subsequently be noted that while
all state actors in the dataset are given Gleditsch and Ward numbers, there are a number of
instances where we differ from Gleditsch and Ward when it comes to the names of the states.
The following changes have been made:
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
54
Previous versions Version 1-2010
Bosnia and Herzegovina and Bosnia-
Herzegovina interchangeably
Bosnia-Herzegovina
Democratic Republic of Vietnam and North
Vietnam interchangeably
North Vietnam (until 1975), Vietnam (1976-
2009)
German Federal Republic and Germany
interchangeably
Germany
Italy/Sardinia Italy
People’s Republic of Korea and North Korea
interchangeably
North Korea
Republic of Korea South Korea
Republic of Vietnam and South Vietnam
interchangeably
South Vietnam
Sri Lanka (Ceylon) and Sri Lanka
interchangeably
Sri Lanka
Turkey/Ottoman Empire and Turkey,
interchangeably
Turkey
United Arab Emirate and UAE
interchangeably
United Arab Emirate
United Kingdom and UK interchangeably United Kingdom
United States of America and USA
interchangeably
United States of America
Yemen Arab Republic and North Yemen
interchangeably
North Yemen (until 1989), Yemen (1990-
2009)
Yemen People’s Republic and South Yemen
interchangeably
South Yemen
Yugoslavia (Serbia) Serbia (Yugoslavia)
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
55
Changes from version 1.0 to version 1-2009
Dyad-years removed
DyadID ConflictID Location SideB Year(s)
25 91 Chad MDD 1998
54 133 Ethiopia ONLF 1998
94 146 Liberia INPFL 1989
110 178 Niger FLAA 1992
112 178 Niger UFRA 1997
129 180 Senegal MFDC 1999
151 118 Uganda LRA 1999
235 95 Peru Sendero
Luminoso
1981
249 112 Philippines ASG 1999
379 103 Cambodia FUNCINPEC 1998
381 37 Israel Hamas 1996, 2000
422 137 Afghanistan Jumbish-i-Milli-
ye Islami
1996
447 211 Ethiopia al-Itahad al-
Islami
1997
552 103 Cambodia FUNK 1970-75
674
22 Paraguay Opposition
coalition
(Febreristas)
1947
728
137 Afghanistan Jam'iyyat-i
Islami-yi
Afghanistan
1979-88
Dyad-years added
DyadID ConflictID Location SideB Year(s)
37 214 Congo Cocoyes 1997
38 214 Congo Ntsiloulous 1998
54 133 Ethiopia ONLF 1994
55 219 Ethiopia OLF 1992, 1994-95,
1998
110 255 Niger FLAA 1991-92
112 255 Niger UFRA 1997
148 118 Uganda UPA 1992
249 112 Philippines ASG 1993, 1996
353 200 Tajikistan UTO 1998
363 221 Uzbekistan IMU 1999
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
56
DyadID ConflictID Location SideB Year(s)
364
103 Cambodia KR 1970-75
411 137 Afghanistan Jam'iyyat-i
Islami-yi
Afghanistan
1979-88
412
137 Afghanistan Hizb-i Islami-yi
Afghanistan
1980-88
447 211 Ethiopia al-Itahad al-
Islami
1995
600 45 Cuba M-26-7 1956-58
645 113 Sudan NDA 1996
759 137 Afghanistan Hizb-i Islami-yi
Afghanistan -
Hekmatyar
faction
1980-88
775 222 Central African
Republic
Military faction
(forces of
Cyriac Souke)
1996-97
777
91 Chad Military faction
(forces of
Maldoum Bada
Abbas)
1991
778 80 Venezuela Bandera Roja 1982
Misc. changes
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
1
191 Algeria All
years
Startdate 1985-08-27 1992-01-19
1 191 Algeria All
years
Startdate2 1992-12-01 1992-01-19
12 90 Burundi All years Startdate 1994-09-13 1994-11-14
12 90 Burundi All years Startdate2 1994-10-18 1994-11-26
36 214 Congo All years Startdate 1993-11-04 1993-11-03
36 214 Congo 1993-94 Startdate2 1993-11-04 1993-11-03
36 214 Congo 1998 Int 1 2
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
57
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
37 214 Congo 1997 SideA2nd Angola,
Chad
37 214 Congo All years Startdate 1997-10-18 1997-10-22
37 214 Congo All years Startdate2 1997-10-18 1998-06-01
38 214 Congo All years Startdate 1998-08-28 1998-12-18
38 214 Congo All years Startdate2 1998-12-21 1999-01-01
44 184 Djibouti 1999 SideB FRUD – AD FRUD - D
45 215 Eritrea,
Ethiopia
1998-
2000
Startdate2 1998-05-31 1998-06-05
48 70 Ethiopia 1991 Int 2 1
49 70 Ethiopia All years Startdate2 1989-05-20 1989-05-16
51 168 Ethiopia All years Startdate 1975-06-01 1975-06-03
51 168 Ethiopia All years Startdate2 1975-06-01 1975-06-15
54 133 Ethiopia All years Startdate 1994-02-26 1996-01-01
54 133 Ethiopia All years Startdate2 1994-02-26 1996-01-01
58 216 Guinea-
Bissau
All years Startdate2 1998-06-07 1998-06-16
58 216 Guinea-
Bissau
1998 Int 1 2
93 146 Liberia All years Startdate2 1989-12-29 1989-12-31
94 146 Liberia All years Startdate 1990-05-14 1990-07-01
94 146 Liberia All years Startdate2 1990-08-03 1990-09-09
95 146 Liberia All years Startdate 2000-07-08 2000-01-01
95 146 Liberia All years Startdate2 2000-08-01 2000-01-01
96 177 Mali All years Startdate2 1990-07-21 1990-08-01
97 177 Mali All years Startdate 1991-12-12 1994-10-22
97 177 Mali All years Startdate2 1994-10-04 1994-11-13
99 136 Mozambique 1992 Int 1 2
111 178 Niger All years Startdate 1994-02-23 1992-03-01
111 178 Niger All years Startdate2 1994-05-16 1992-10-01
112 178 Niger All years Startdate 1996-12-30 1992-03-01
112 178 Niger All years Startdate2 1997-10-19 1992-10-01
114 212 Niger All years Startdate 1997-01-19 1995-03-23
114 212 Niger All years Startdate2 1997-12-10 1996-02-06
129 180 Senegal All years Startdate 1988-12-01 1984-01-01
129 180 Senegal All years Startdate2 1990-08-01 1990-01-01
151 118 Uganda 1991 Int 1 2
151 118 Uganda 2002 Int 2 1
189 214 Congo 1997 SideB2nd Chad
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
58
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
217 10 Philippines 1989,
1992
Int 1 2
217 10 Philippines 1990 Int 2 1
219 183 Trinidad and
Tobago
All years Startdate 1990-07-27 1990-07-29
219 183 Trinidad and
Tobago
All years Startdate2 1990-07-30 1990-08-01
220 10 Philippines 1989-90 SideB Military
faction
(forces of
Honasan,
Abenina &
Zumel)
Military
faction
(Forces of
Benjamin
Mejia)
220 10 Philippines All years Startdate 1989-12-01 1989-12-06
220 10 Philippines All years Startdate2 1989-12-02 1989-12-06
225 120 El Salvador 1990 Int 1 2
227 208 Ecuador,
Peru
All years Startdate 1995-01-26 1994-02-25
227 208 Ecuador,
Peru
All years Startdate2 1995-01-30 1994-04-28
230 205 Mexico All years Startdate2 1994-01-01 1994-01-02
235 95 Peru All years Startdate 1981-08-15 1981-01-15
235 95 Peru All years Startdate2 1982-08-22 1981-01-01
241 196 Egypt 1993-98 SideB al-Gama'a
al-Islamiyya
al-Gamaa al-
Islamiyya
243 157 Sri Lanka
(Ceylon)
All years Startdate2 1984-09-10 1984-08-11
244 186 Haiti All years Startdate 1989-04-03 1989-04-06
244 186 Haiti All years Startdate2 1989-04-08 1989-04-11
246 143 Iran All years SideB MEK Mujahideen e
Khalq
249 112 Philippines All years Startdate2 1993-05-03 1994-06-06
248 119 United
Kingdom
1998 SideB RIRA Real IRA
251 186 Haiti All years Startdate 1991-09-30 1991-09-13
252 112 Philippines 2001 SideB MNLF – NM MNLF -
Misauri
259 197 Georgia All years Startdate2 1992-08-18 1992-08-16
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
59
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
295 218 Yugoslavia
(Serbia)
All years Startdate2 1998-03-01 1998-02-28
299 205 Mexico All years Startdate2 1996-09-16 1996-09-22
319 95 Peru All years Startdate2 1989-03-13 1989-03-14
333 159 Turkey 1998-99 Int 2 1
348 206 Russia 1994-96,
1999-
2007
SideB Chechen
Republic of
Ichkeria
Republic of
Chechnya
(Ichkeria)
360 224 United States
of America
2001-02,
2004-08
SideB al-Qaida al-Qaida (The
Base)
361 193 Azerbaijan All years Startdate 1991-12-29 1991-12-01
362 201 Azerbaijan 1993 SideB Military
faction
(Forces of
Suret
Husseinov)
Husseinov
military
faction
363 221 Uzbekistan All years Startdate2 1999-03-30 2000-08-17
367 199 Moldova All years Startdate2 1992-03-17 1992-03-29
368 220 Russia
(Soviet
Union)
All years Startdate 1999-08-29 1999-08-25
368 220 Russia
(Soviet
Union)
All years Startdate2 1999-09-02 1999-08-25
373 182 Russia
(Soviet
Union)
1990 SideB APF Azerbaijani
Popular Front
375 207 Yemen 1994 Location Yemen Yemen (Arab
Republic of
Yemen)
375 207 Yemen 1994 SideA Yemen Yemen (Arab
Republic of
Yemen)
381 37 Israel All years Startdate2 1993-07-01 1993-09-12
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
60
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
411 137 Afghanistan SideB Jam’iyyat-I
Islami-yi
Afghanistan
Jamaat-i-
Islami
412 137 Afghanistan 1989-95 SideB Hizb-i
Islami-yi
Afghanistan
Hezb-i Islami
413 137 Afghanistan 1989-95 SideB Hixb-i
Wahdat
Hezb-i-
Wahdat-i-
Islami
422 137 Afghanistan 1993-95 SideB Junbish-i
Milli-yi
Islami
Jumbish-i-
Milli-ye
Islami
423 137 Afghanistan All years Startdate 1996-10-11 1996-10-09
423 137 Afghanistan All years Startdate2 1996-10-12 1996-10-13
426 37 Israel All years Startdate 2001-11-06 2001-11-02
439 225 Cote
D’Ivoire
2004 SideB FN Forces
Nouvelles
440 186 Haiti All years Startdate 2004-02-05 2004-02-15
447 211 Ethiopia All years Startdate 1995-07-01 1996-07-08
447 211 Ethiopia All years Startdate2 1995-07-01 1996-08-10
466 3 China 1946-49 SideB PLA People’s
Liberation
Army
540 114 Madagascar 1971 SideB Monima Monima
National
Indepen-
dence
Movement
543 128 Iran, Iraq 1980-88 Startdate 1972-04-11 1980-09-23
543 128 Iran, Iraq 1980-88 Startdate2 1974-01-01 1980-09-23
544 129 Pakistan 1974-77 SideB Baluchi
insurgentst
Baluchi
separatists
545 132 Cambodia,
Vietnam
1975-77 Location Cambodia,
Vietnam
Cambodia,
Democratic
Republic of
Vietnam
545 132 Cambodia,
Vietnam
1975-77 SideB Vietnam Democratic
Republic of
Vietnam
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
61
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
550 138 China,
Vietnam
1978-81,
1983-84,
1986-88
Location China,
Vietnam
China,
Democratic
Republic of
Vietnam
550 138 China,
Vietnam
1978-81,
1983-84,
1986-88
SideB Vietnam Vietnam
563 124 North
Yemen,
South
Yemen
1972,
1978-79
Location North
Yemen,
South
Yemen
Democratic
Republic of
Yemen,
People's
Republic of
Yemen,
Yemen (Arab
Republic of
Yemen)
563 124 North
Yemen,
South
Yemen
1972,
1978-79
SideA North
Yemen
Yemen (Arab
Republic of
Yemen)
563 124 North
Yemen,
South
Yemen
1972,
1978-79
SideA South
Yemen
People's
Republic of
Yemen
564 164 South
Yemen
1986 Location South
Yemen
Democratic
Republic of
Yemen,
People's
Republic of
Yemen
564 164 South
Yemen
1986 SideA South
Yemen
People's
Republic of
Yemen
564 164 South
Yemen
1986 SideB Yemenite
Socialist
Party -
Abdul Fattah
Ismail
faction
Faction of
Yemenite
Socialist
Party
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
62
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
572 96 North
Vietnam,
South
Vietnam
1965-75 Location North
Vietnam,
South
Vietnam
Democratic
Republic of
Vietnam,
Republic of
Vietnam
572 96 North
Vietnam,
South
Vietnam
1965-75 SideA North
Vietnam
Republic of
Vietnam
572 96 North
Vietnam,
South
Vietnam
1965-75 SideA2nd North Korea Australia,
New Zealand,
Philippines,
Republic of
Korea ,
Thailand,
United States
of America
572 96 North
Vietnam,
South
Vietnam
1965-75 GWNOA 816 817
572 96 North
Vietnam,
South
Vietnam
1965-75 GWNOA2nd 731 900, 920, 840,
732, 800, 2
572 96 North
Vietnam,
South
Vietnam
1965-75 SideB South
Vietnam
Democratic
Republic of
Vietnam
572 96 North
Vietnam,
South
Vietnam
1965-75 SideB2nd Australia,
New
Zealand,
Philippines,
Republic of
Korea,
Thailand,
United
States of
America
People's
Republic of
Korea
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
63
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
572 96 North
Vietnam,
South
Vietnam
1965-75 GWNOB 817 816
572 96 North
Vietnam,
South
Vietnam
1965-75 GWNOB2 817 816
572 96 North
Vietnam,
South
Vietnam
1965-75 GWNOB2nd 900, 920,
840, 732,
800, 2
731
587 68 Democratic
Republic of
Congo
(Zaire)
1960-62 SideB State of
Katanga
Katanga
595 46 Indonesia 1953,
1958-61
SideB Darul Islam Darul Islam
Movement
600 45 Cuba 1956-58 SideB M-26-7 Movimiento
26 De Julio:
26th of July
Movement
613 77 China, India 1967 Startdate 1959-08-01 1967-01-01
613 77 China, India 1967 Startdate2 1962-01-01 1967-01-01
614 52 South
Vietnam
1955-64 Location South
Vietnam
Republic of
Vietnam
614 52 South
Vietnam
1955-64 SideA South
Vietnam
Republic of
Vietnam
615
33 North
Yemen
1948,
1962-70,
1980-82
Location North
Yemen
Yemen (Arab
Republic of
Yemen)
615
33 North
Yemen
1948,
1962-70,
1980-82
SideA North
Yemen
Yemen (Arab
Republic of
Yemen)
616 33 North
Yemen
1948,
1962-70,
1980-82
Location North
Yemen
Yemen (Arab
Republic of
Yemen)
616 33 North
Yemen
1948,
1962-70,
1980-82
SideA North
Yemen
Yemen (Arab
Republic of
Yemen)
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
64
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
617
33 North
Yemen
1948,
1962-70,
1980-82
Location North
Yemen
Yemen (Arab
Republic of
Yemen)
617
33 North
Yemen
1948,
1962-70,
1980-82
SideA North
Yemen
Yemen (Arab
Republic of
Yemen)
618
38 North Korea,
South Korea
1949-53 Location North Korea,
South Korea
People's
Republic of
Korea,
Republic of
Korea
618
38 North Korea,
South Korea
1949-53 SideA North Korea People's
Republic of
Korea
618
38 North Korea,
South Korea
1949-53 SideB South Korea Republic of
Korea
628 222 Central
African
Republic
2006 Type 4 3
628 222 Central
African
Republic
2006 SideA2nd France
643 251 Israel All years Startdate2 1990-07-10 1990-11-09
647 112 Philippines 2007 SideB MNLF – HM MNLF -
Malik
668 17 Vietnam 1946-54 Location Vietnam Democratic
Republic of
Vietnam
673 22 Paraguay 1947 SideB Opposition
coalition
(Febreristas,
Liberals and
Commu-
nists)
Liberals and
Communists
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
65
Dyad ID
Conflict ID
Location Year(s) Variable Added Removed
686 89 South
Yemen
1964-67 Location South
Yemen
Democratic
Republic of
Yemen,
People's
Republic of
Yemen
696 37 Israel 1977-84 Startdate 1965-01-01 1948-05-15
696 37 Israel 1977-84 Startdate2 1965-01-01 1949-01-01
697 37 Israel 1977-84 Startdate 1965-01-01 1948-05-15
700 118 Uganda 1972,
1979
SideB Kikosi
Maalum
KM
708 118 Uganda 1988 SideB Lord’s Army LA
715 59 Mauritania 1957-58 SideB NLA National
Liberation
Army
726 63 Lebanon 1986 SideB Lebanese
Forces -
Hobeika
faction
Lebanese
forces
(Hobeika
faction)
Two notes on name changes
In a continued effort to streamline the way that we write names in our datasets and databases,
UCDP has applied a new rule when dealing with splinter groups. If a group splinters and it is
clear which group is the faction as they take a somewhat new name (e.g. Palipehutu–FNL in
Burundi, splitting from the original Palipehutu) the name is written with a long hyphen
without any spaces. If, on the other hand, the splinter does not take a new name, but
maintains that they are the original group (for coding rules regarding how we determine
which grouping is the faction, see the UCDP Dyadic Dataset codebook at
http://www.pcr.uu.se/research/UCDP/data_and_publications/datasets.htm) UCDP needs to
create a name in order to be able to separate the factions in the data. The faction is then given
the original name, followed by a space, a long hyphen, a space and then the initials of the
leader of the group. An example is the faction of FRUD that kept on fighting in Djibouti
when the main part of the group had signed a peace agreement. The faction’s leader was
called Ahmed Dini, and the name of the group was subsequently set as FRUD – AD.
In Version 4-2009, another change is that we have chosen to use the same name for a group
for all years of the conflict, even if it has in fact changed names during the conflict period.
Thus, instead of recording PRA (Popular Resistance Army) for Uganda 1982, we have
recorded NRA (National Resistance Army) for all years (1982-86), even though the group
only changed its name from PRA to NRA in 1983. In earlier versions the name history could
be seen in the name (e.g. PRA/NRA and UDCA/LRA). This is thus not the case in version 4-
UCDP Dyadic Dataset Version History and Known Errata, Version 1–2016
66
2009. However, a special rebel group dataset will be released in July where the name history
of all groups registered in UCDP data will be included. The dataset will be available at
http://www.pcr.uu.se/research/UCDP/data_and_publications/datasets.htm.