By Agence France-Presse
China's economy already has shown signs of slowing, while the trade war has shaken the confidence of US businesses, as retaliatory tariffs have raised prices and helped choke off a key export market.
And President Donald Trump's aggressive strategy has failed to produce a reduction in the US trade deficit with China, which he set as a primary goal.
Under the looming threat of a surge in tariffs once the 90-day truce expires, financial markets worldwide have lost ground in recent days as comments about the status of the talks turned more cautious.
US Trade Representative Robert Lighthizer and Treasury Secretary Steven Mnuchin will lead the US delegation for the third round of talks on Thursday and Friday in Beijing.
While officials seemed optimistic after talks last week in Washington, more recent comments have jarred financial markets, amplifying concerns about how the dispute will affect global growth.
US President Donald Trump said Thursday he did not expect to meet his Chinese counterpart Xi Jinping before a March 1 deadline for the two economic superpowers to reach a deal.
Trump had said final resolution of the trade dispute would depend on the meeting with Xi "in the near future" but told reporters it had not yet been arranged.
And top White House economist Larry Kudlow said Thursday that while Trump was "optimistic" about prospects for a deal, there remained a "sizable distance" separating the two sides.
- Deadline extension? -
While China has offered to buy more US soybeans and beef, officials have yet even to agree on a draft of a deal that would address key US concerns, according to media reports.
Washington is demanding far-reaching changes from China to address unfair practices it says are deeply unfair, including theft of American intellectual property and the massive Chinese trade surplus.
The dispute has escalated to encompass $360 billion in trade between the two economic superpowers, and without an agreement by the start of March, the Trump administration is poised to more than double the punitive duties on $200 billion in Chinese goods.
However, amid pressure from the business community for the two sides to resolve the dispute, CNBC cited a senior administration official saying the March 1 deadline could be pushed back.
"Right now it is in place but that is right now," the official told CNBC. "It could change via telephone."
The White House said there would be a preparatory meeting of senior officials beginning February 11 and the talks would include officials from the Agriculture, Energy and Commerce Departments.
The main delegation also includes David Malpass, whom President Donald Trump has nominated to be president of the World Bank and who has worked to limit the bank's assistance to Beijing.
However, strident White House China critic Peter Navarro was not listed as part of the US team.