We’re covering a mounting global backlash against China, an exchange of gunfire between North and South Korea and how New York City will change. | | By Carole Landry and David Scull | | Chinese police marching by the entrance of the Forbidden City as it reopened to a limited number of visitors on Saturday. Kevin Frayer/Getty Images | | Australia has called for an inquiry into the origin of the virus. President Trump has blamed China for the contagion and is seeking to punish the country. Some governments want to sue Beijing for damages and reparations. Germany and Britain are having second thoughts about dealing with the Chinese tech giant Huawei. | | China has responded aggressively, mixing medical aid to other countries with economic threats. | | Quotable: “The mistrust of China has accelerated so quickly with the virus that no ministry knows how to deal with it,” said Angela Stanzel, a China expert with the German Institute for International and Security Affairs. | | ■ Prime Minister Boris Johnson spoke of his ordeal battling the coronavirus in an interview with The Sun newspaper. Even after receiving “liters and liters of oxygen” while hospitalized, the British prime minister said he was not getting better and he could not understand why. | | ■ Italy is set to enter a reopening phase today but strong protests from politicians, business leaders, mayors and others confused about the government’s plans have created a sense of impending chaos. | | ■ Former President George W. Bush called on Americans to put aside partisan differences, heed the guidance of medical professionals and show empathy for those stricken by the coronavirus and the resulting economic devastation. President Trump swiped at him in response. | | The lockdown in India has emptied streets in New Delhi. Danish Siddiqui/Reuters | | The coronavirus has touched almost every country, but its impact has been uneven. Some big cities like New York, Paris and London have been hit hard. Others, like Bangkok, New Delhi and Lagos have, so far, fared much better. | | Our team of correspondents reporting from around the world — Hannah Beech in Southeast Asia, Alissa J. Rubin in the Middle East, Anatoly Kurmanaev in South America and Ruth Maclean in Africa — delve into the puzzle of why the virus has overwhelmed some places and left others relatively unscathed. | | Research: There are hundreds of studies underway on how demographics, public health and genetics could possibly explain the virus’ differing impact. Each possible explanation seems to come with caveats and counterevidence. If older people are highly vulnerable, for instance, Japan, with its aging population, should be devastated. It is far from it. | | Asia’s new normal: As cities in Australia and Asia and elsewhere get their outbreaks under control, churches, schools, restaurants, theaters and even sports venues are starting to reopen. | | But those emerging from weeks or months of isolation are returning to a different world, where social distancing, hygiene standards and government-imposed restrictions infuse nearly every activity — a reality likely to persist until a vaccine or a treatment is found. | | South Korean soldiers patroling the Demilitarized Zone in April. Ed Jones/Agence France-Presse — Getty Images | | South Korea said it was contacting North Korea through a military hotline to prevent an escalation after the North’s forces opened fire near the Demilitarized Zone on Sunday. | | The gunshots hit a guard post inside the DMZ, which separates the North from the South, according to a statement by the South’s military. South Korean soldiers fired back, officials added. No casualties were reported. | | The reason for the gunshots remained unclear. The U.S. secretary of state, Mike Pompeo, said the fire had most likely been accidental. | | Context: The episode came two days after North Korean state media reported that the leader, Kim Jong-un, had appeared in public. Mr. Kim had been absent for three weeks, prompting speculation about his health. | | A big question: Our correspondent in Seoul writes that the weeks of uncertainty about Mr. Kim brought home an alarming fact: No one knows who will control North Korea, or its nuclear weapons, should he die. | | The search for a vaccine for the coronavirus has taken on an intensity never before seen in medical research. But there’s much more at play than just science. | | Our reporters look at the political and business interests in the endeavor as well as questions about safety and the challenges of producing billions of doses of vaccine. | | PAID POST: A MESSAGE FROM CAMPAIGN MONITOR | TEST: Email Marketing 101: Never Sacrifice Beauty for Simplicity | A drag-and-drop email builder, a gallery of templates and turnkey designs, personalized customer journeys, and engagement segments. It's everything you need to create stunning, results-driven email campaigns in minutes. And with Campaign Monitor, you have access to it all, along with award-winning support around the clock. It's beautiful email marketing done simply. | | Learn More | | | Afghan migrants in Iran: Afghanistan is investigating claims that dozens of Afghans being smuggled into Iran to work were tortured by Iranian border guards and thrown into a river, where many drowned. | | Pakistani exile: The body of Sajid Hussain, a Pakistani journalist in exile in Sweden who edited a news site that chronicled organized crime, drug smuggling and the decades-long insurgency in Balochistan Province, was found in a river north of Stockholm on Friday. Reporters Without Borders suggested that Mr. Hussain’s death could have followed an abduction “at the behest of a Pakistani intelligence agency.” | | Imprisoned Egyptian: Shady Habash, an Egyptian filmmaker imprisoned over a music video that mocked President Abdel Fattah el-Sisi, has died at a maximum-security facility after two years in detention without trial, his lawyer said. The cause of death was not immediately clear. | | Hilary Swift for The New York Times | | Snapshot: Above, a waterfront park in Brooklyn, N.Y., on Saturday, as the arrival of warm spring weather tempted New Yorkers to abandon the discipline of weeks of lockdown. Worried officials are warning them to wear masks and keep social distance. | | Cook: Warming and gently spiced, Melissa Clark’s easy snickerdoodle loaf cake comes together in just about an hour — and may not last nearly as long. | | Celebrate: A socially distant birthday party calls for a dash of corniness and a pinch of magical thinking. Here’s how to blow out those candles via videochat. | | Gardening: It’s not too late to start a flower garden. Get some homegrown color with zinnias, marigolds and sunflowers. | | For a million more ideas (OK, hundreds of ideas) about things to do while staying safe, check out our At Home collection. | | Our reporter Vivian Lee left New York in late 2018 and moved to Beirut to cover the Middle East. The city had been home for six and half years, and it was where she started as a Times metro reporter. | | Houston Street in Manhattan recently. John Taggart for The New York Times | | When I arrived here as a foreign correspondent, I found stories — civil war in Syria, authoritarianism in Egypt. But now the loudest headlines are all at home. | | I text people in New York in the same tones my mother has taken to using since I moved to the Middle East: “Are you OK? Be careful.” | | Every space in New York is its own theater. If the city offers absolution in anonymity, it also offers fleeting fame in the simple act of walking around. | | But now the streets of New York are empty. | | Disaster is making New Yorkers pine for the city that is as much out of their reach as mine. From Beirut, I scroll through the Instagram accounts devoted to immortalizing New Yorkers, read the essays about choosing to stay, follow the #BestNYAccent contest. | | When I left, everyone said, Oh, you’ll come back, and it’ll be exactly the same. You’ll change, but New York never does. Even then I didn’t believe them, though I trusted that a certain timelessness would prevail. Now they don’t believe it either. | | That’s it for this briefing. See you next time. | | Thank you To Theodore Kim and Jahaan Singh for the rest of the break from the news. You can reach the team at briefing@nytimes.com. | | Were you sent this briefing by a friend? Sign up here to get the Morning Briefing. | | |