Suddenly, it's no longer the "Wuhan virus."

The United States and China have reached a truce in a vitriolic feud over the coronavirus pandemic, with the two powers each seeing at least a tactical interest in cooling down.

President Donald Trump, hardly known for the delicacy of his word choices, has dropped his provocative term "Chinese virus" and held back from criticizing Beijing's response since a telephone call, on March 26 US time, with his counterpart Xi Jinping.

Chinese Ambassador Cui Tiankai (left) speaks to the director of the National Zoo, Dennis Kelly, as they wait for the departure of giant panda Bao Bao in February 2017
Chinese Ambassador Cui Tiankai (left) speaks to the director of the National Zoo, Dennis Kelly, as they wait for the departure of giant panda Bao Bao in February 2017 GETTY IMAGES NORTH AMERICA / ALEX WONG

And Secretary of State Mike Pompeo -- who so insisted on saying "Wuhan virus" that the Group of Seven foreign ministers could not issue a joint statement -- has been talking of cooperation.

"We know that this is a global pandemic, and this is the time for every country to work together to resolve that," Pompeo told reporters Tuesday when asked about China.

Beijing infuriated the United States last month when a foreign ministry spokesman spread a conspiracy theory that US troops brought the virus to Wuhan.

Chinese President Xi Jinping shakes hands with US President Donald Trump as they meet on the sidelines of the G20 summit in Osaka in June 2019
Chinese President Xi Jinping shakes hands with US President Donald Trump as they meet on the sidelines of the G20 summit in Osaka in June 2019 AFP / Brendan Smialowski

Cui Tiankai, China's gentlemanly ambassador to Washington, struck a highly different tone in an op-ed in The New York Times in which he spoke of his affection for Americans and promised China would do "whatever it can to support the United States."

State Department spokeswoman Morgan Ortagus welcomed Cui's remarks but called, civilly, on China to share virus data and allow free speech.

"True cooperation requires transparency and real actions, not just rhetoric," she said.

People wearing face masks walk through a cemetery in Brooklyn
People wearing face masks walk through a cemetery in Brooklyn AFP / Angela Weiss

Whatever the faults in China's response, many observers saw Trump's blaming of Beijing as a political ploy as he faces criticism for not acting sooner to stop COVID-19, which has killed more than 12,000 people in the United States.

Passengers wear hazmat suit as they arrive at the Wuhan Wuchang Railway Station in leave the original epicenter of the COVID-19 coronavirus
Passengers wear hazmat suit as they arrive at the Wuhan Wuchang Railway Station in leave the original epicenter of the COVID-19 coronavirus AFP / NOEL CELIS

But with medical supplies in dangerously short supply, Trump also needs China, which produces half of the imported masks in the United States.

"Washington certainly does not want to alienate Beijing to the point that it bans the sale of medical equipment to the United States," said Elizabeth Economy, director of Asia studies at the Council on Foreign Relations.

"It also reflects a broader sentiment within much of the United States that this is not the time to play an international blame game -- the priority should be on saving American and other lives."

Xi Jinping shows Joe Biden a chocolate-covered macadamia nut presented to him at a 2012 meeting in Los Angeles when the two were both vice presidents
Xi Jinping shows Joe Biden a chocolate-covered macadamia nut presented to him at a 2012 meeting in Los Angeles when the two were both vice presidents GETTY IMAGES NORTH AMERICA / POOL

Economy said the Trump administration may also feel that it no longer needs to be as upfront, especially when other countries have also stepped up criticism of Beijing.

She doubted that the newfound tone would improve the rest of the relationship, which was already tense before the pandemic.

The Trump administration has vowed to confront China on multiple fronts, including on its human rights record and military buildup, with the State Department just Monday criticizing Beijing over the sinking of a Vietnamese fishing trawler.

From China's standpoint, the friction also has limited benefits, especially when Beijing is seeking to cast itself around the world as a pandemic benefactor.

The State Department's Global Engagement Center, which tracks foreign propaganda, says Chinese state social media have already phased out conspiracy theories blaming the United States.

For China, the goal is to "keep Trump calm and to try to prevent unnecessary damage from taking place, and keeping that channel open between you and Trump," said Douglas Paal, a scholar at the Carnegie Endowment for International Peace.

Paal, a former Asia adviser to presidents Ronald Reagan and George H.W. Bush, said that China also had an eye on US elections in November.

China's top priority is to revive global demand for its exports and initially thought that Trump's re-election would be its best outcome, fearing that the rival Democrats would intervene more forcefully on human rights as well as on trade, Paal said.

But Paal was struck by an overall positive portrayal in Chinese state media of Joe Biden, the likely Democratic nominee.

Biden as vice president invested heavily in building a relationship with Xi, China's most powerful leader in decades.

China also sees a "historic strategic opportunity" to expand its power as Trump has weakened US alliances, Paal said.

"My reading of the official media suggests that they're less committed to getting Trump re-elected than they were a year ago," Paal said.

"And therefore they don't have as many ambitions for doing things with Trump. They can stand back and just take care of their own interests."