A Barrage of Insults Irks the Group of 7 NEWARK — The camera perched above the bus stop sends back a continuous feed from the corner of 16th Avenue and South 18th Street in Newark’s West Ward. Regular customers come and go from Max’s, a convenience store, and a man without a shirt paces aimlessly on the same slice of pavement. Anyone with a fast internet connection and a desire to watch could also see Fernando Demarzino stepping out of his cousin’s barbershop. “My girlfriend called and told me what I had in my hand,” Mr. Demarzino said on a recent evening as he stood within the camera’s line of sight. His girl- friend had heard about official camera feeds that had recently been made available online, and she was checking out the spot where she knew she was likely to find Mr. Demarzino. He had change in his hand, and she jok- ingly told him the image was sharp enough for her to count out three quarters. She also spotted his Jeep parked on the street. Surveillance cameras are an in- escapable fixture of the modern city. Law enforcement agencies have deployed vast networks to guard against terrorism and com- bat street crime. But in Newark, the police have taken an extraor- dinary step that few, if any, other departments in the country have Where Police Cameras and Web Users See You By RICK ROJAS Continued on Page 15 QUEBEC CITY — President Trump upended two days of global economic diplomacy late Satur- day, refusing to sign a joint state- ment with America’s allies, threat- ening to escalate his trade war on the country’s neighbors and de- riding Canada’s prime minister as “very dishonest and weak.” In a remarkable pair of acrimo- ny-laced tweets from aboard Air Force One as he flew away from the Group of 7 summit toward a meeting with North Korea’s leader, Mr. Trump lashed out at Justin Trudeau. He accused the prime minister, who hosted the seven-nation gathering, of ma- king false statements. Literally moments after Mr. Trudeau’s government proudly released the joint statement, not- ing it had been agreed to by all seven countries, Mr. Trump blew apart the veneer of cordiality that had prevailed throughout the two days of meetings in a resort town on the banks of the St. Lawrence River. “Based on Justin’s false state- ments at his news conference, and the fact that Canada is charging massive Tariffs to our U.S. farm- ers, workers and companies, I have instructed our U.S. Reps not to endorse the Communique as we look at Tariffs on automobiles flooding the U.S. Market!” Mr. Trump wrote. A few hours earlier, Mr. Trudeau said the seven nations had reached broad agreements on a range of economic and foreign pol- icy goals. But he acknowledged that deep disagreements re- mained between Mr. Trump and the leaders of the other nations, especially on trade. Mr. Trudeau had sought to play down personal clashes with Mr. Trump as he wrapped up the sum- mit, calling the meeting “very suc- cessful” and saying he was “in- Continued on Page 10 President Refuses to Sign Statement From Top Allies By MICHAEL D. SHEAR and CATHERINE PORTER Trump Calls Leader of Canada ‘Weak’ PRETORIA, South Africa — The nation’s tax chief steeled him- self. Chiding and pleading with President Jacob Zuma to get him to file his taxes — much less pay the full amount — was always an excruciating task. And it kept getting worse. One of the president’s sons, a nephew and countless business allies had serious tax problems as well, four former senior officials said, alarming investigators and leav- ing them wondering what to do. South Africa’s young democra- cy had depended on the faith — and taxes — of its people since the end of apartheid, so the risks were evident. If the leader of the Af- rican National Congress, his rela- tives and his influential associates could dodge their tax duties, the rest of the country might shirk them, too, hollowing out the gov- ernment’s ability to function at the most basic level. The tax commissioner, Ivan Pil- lay, said he tried to be discreet, vis- iting the president several times from 2012 to 2014 to prod him to comply. “If I am in the way, just tell me and I’ll go,” Mr. Pillay said in a rare interview, recounting his con- versations with Mr. Zuma. “I won’t like it, but I’ll go. I’m a disci- plined member of the A.N.C.” Mr. Zuma demurred, insisting there was no need to resign, Mr. Pillay said. Instead, the president dealt with the issue himself a few months later: He abruptly re- placed Mr. Pillay with a loyalist A Tax Scandal Is Siphoning The Lifeblood of South Africa By SELAM GEBREKIDAN and NORIMITSU ONISHI Jacob Zuma, former president of South Africa, last week. POOL PHOTO BY MARCO LONGARI Continued on Page 12 Senator Elizabeth Warren has come calling as recently as April. Kamala Harris, the first-term sen- ator of California, has made re- peated visits, starting as early as her third month in office. Former Vice President Joseph R. Biden Jr. is also no stranger to the big- money donor world of New York; he was here in April — his third such visit in three months. It will be months before Mr. Bi- den, Ms. Harris, Ms. Warren or most potential presidential aspi- rants will barnstorm across the farmlands of Iowa, dig into a low- country boil in South Carolina or field questions at a town-hall meeting in New Hampshire. But with American presidential races requiring an ever-dizzying amount of money, an early, be- hind-the-scenes 2020 contest is al- ready taking place: the New York money primary. Over passed appetizers, inti- mate dinners and private board room meet-and-greets, a parade of nationally ambitious Demo- crats have been cycling through the offices and living rooms of the Manhattan money set. Top New York donors and Dem- ocratic fund-raisers, in more than two dozen interviews, said that their phones rarely stop buzzing as candidates blitz one of the densest concentrations of Demo- Money Primary For 2020 Starts With New York By SHANE GOLDMACHER Continued on Page 16 WASHINGTON — As Presi- dent Trump prepares to meet Kim Jong-un of North Korea to negoti- ate denuclearization, a challenge that has bedeviled the world for years, he is doing so without the help of a White House science ad- viser or senior counselor trained in nuclear physics. Mr. Trump is the first president since 1941 not to name a science adviser, a position created during World War II to guide the Oval Of- fice on technical matters ranging from nuclear warfare to global pandemics. As a businessman and president, Mr. Trump has proudly been guided by his instincts. Nev- ertheless, people who have par- ticipated in past nuclear negotia- tions say the absence of such high- level expertise could put him at a tactical disadvantage in one of the weightiest diplomatic matters of his presidency. “You need to have an empow- ered senior science adviser at the table,” said R. Nicholas Burns, who led negotiations with India over a civilian nuclear deal during the George W. Bush administra- tion. “You can be sure the other side will have that.” The lack of traditional scientific advisory leadership in the White House is one example of a signifi- cant change in the Trump admin- istration: the marginalization of science in shaping United States policy. There is no chief scientist at the State Department, where science is central to foreign policy matters such as cybersecurity and global warming. Nor is there a chief sci- entist at the Department of Agri- culture: Mr. Trump last year nominated Sam Clovis, a former talk-show host with no scientific background, to the position, but he withdrew his name and no new nomination has been made. These and other decisions have consequences for public health and safety and the economy. Both the Interior Department and the In the Trump Administration, Science Is Unwelcome. So Is Advice. By CORAL DAVENPORT Continued on Page 18 The world No. 1 Simona Halep, who lost her first three Grand Slam finals, came back from a first-set loss to beat Sloane Stephens at the French Open. PAGE 2 SPORTSSUNDAY Halep Rallies to Win First Major A university campus police officer fired the shots that killed Lavar Montray Douglas. But the 18-year-old’s family could get no other answers. PAGE 14 NATIONAL 14-21 Mystery of a Teenager’s Death Elon Musk and Mark Zuckerberg dis- agree about artificial intelligence’s risks, even as Silicon Valley deals with tech’s unintended consequences. PAGE 1 SUNDAY BUSINESS Tech Moguls and Killer Robots The globe’s biggest sporting event starts this week. Inside is a 12-page preview, including a country-by-country analysis of all eight groups competing in Russia. SPECIAL SECTION: WORLD CUP 2018 32 Teams With One Dream Nicholas Kristof PAGE 9 SUNDAY REVIEW U(D5E71D)x+$!@!/!=!: VICTOR J. BLUE FOR THE NEW YORK TIMES Justify led the Belmont Stakes throughout to secure racing’s Triple Crown. SportsSunday, Page 1. A New King Emerges, in a New York Minute WASHINGTON — Shortly before leaving the annual meet- ing of major world powers on Saturday, President Trump boasted that it had been “tremendously successful” and that on a scale of 0 to 10, “the relationship is a 10.” Fewer than nine hours later, the relationship was plummeting toward a zero. With a petulant tweetstorm from Air Force One, Mr. Trump all but blew up the Group of 7 nations that the United States has led for more than four decades and essentially declared open political war on America’s closest neighbor. Whatever hopes that other leaders had of pacifying Mr. Trump and papering over their widening differences on trade, security and the world order vanished in a flurry of harsh recriminations. Prime Minister Justin Trudeau of Canada re- buffed Mr. Trump’s positions in public comments, prompting Mr. Trump to refuse to sign the care- fully crafted final communiqué. The blowup left the United States alienated from its allies even more than it had been en- tering into the summit meeting and came as Mr. Trump flew to Singapore, earlier than originally scheduled, for a risky meeting with a nuclear-armed American enemy, Kim Jong-un, the repres- sive leader of North Korea. “Trump is readier to give a pass to countries that pose a real threat to Western values and security than to America’s tradi- tional allies,” said Peter Westma- cott, a former British ambassa- dor to Washington. “If there is a ‘method to the madness,’ to use the words of British Foreign Secretary Boris Johnson, it is currently well hidden.” By PETER BAKER and MICHAEL D. SHEAR Continued on Page 10 A photo posted by Chancellor Angela Merkel of Germany described a “spontaneous meeting” of the Group of 7 leaders on Saturday. JESCO DENZEL/GERMAN FEDERAL GOVERNMENT, VIA ASSOCIATED PRESS NEWS ANALYSIS MAKING HISTORY In his own unorthodox way, President Trump has been preparing for decades to meet North Korea’s leader. PAGE 11 Late Edition VOL. CLXVII . . No. 57,989 © 2018 The New York Times Company NEW YORK, SUNDAY, JUNE 10, 2018 Today, mostly cloudy, cooler, high 75. Tonight, rather cloudy, passing showers, low 58. Tomorrow, more sunshine than clouds, cool, high 70. Details in SportsSunday, Page 8. $6.00