“Xi will not be forced into a call,” said Sun Yun, director of the China program at the Washington-based think tank Stimson Center. Only once in recent history, she noted, has a Chinese leader phoned the United States without invitation — after the 9/11 terrorist attacks. The trade tensions, if unchecked, could spill into other domains, she warned.

History and facts have proven that the United States’ increase in tariffs will not solve its own problems,” said the statement from the Chinese commerce ministry. "Instead,