As a senator, Marco Rubio even hinted at the need for regime change in China. Now he talks about cooperation.

The president said a potential arms deal for Taiwan was a “very good negotiating chip” in talks with Beijing. His words raise questions about the reliability of U.S. support.

Amid stepped-up surveillance flights, a visit of the C.I.A. director and an energy embargo, the White House is trying to increase pressure on Cuba.

The president has shifted the foundations of American policy toward China, throwing aside the adversarial approach of recent years.

There has been rampant speculation online about whether the Chinese government changed the transliteration of Marco Rubio’s name to overlook sanctions. But that theory is wrong.

A long-running energy crisis in the island nation reached a breaking point this week, when government officials said they had run out of reserves.

Guests included top U.S. and Chinese officials and the chief executives of several major American companies.

Mr. Trump’s trip, the first U.S. presidential visit to China in almost a decade, was closely watched for signs of whether a trade truce between the countries would hold.