President Trump made the offer to Xi Jinping, China’s leader, said David Perdue, the ambassador to China. The White House later said the U.S. had no plans for such a sale.

© Kenny Holston/The New York Times

President Trump made the offer to Xi Jinping, China’s leader, said David Perdue, the ambassador to China. The White House later said the U.S. had no plans for such a sale.

© Kenny Holston/The New York Times

In his talks with President Trump, the Chinese leader used praise, warnings and wartime history to challenge American support for Taiwan and Japan.

© Doug Mills/The New York Times