Taiwan was Xi’s overriding focus. While Xi didn’t name Japan or ask Trump to pressure Tokyo directly, the people said, his discussion of the post-World War II order was an implicit reference to Japan as the losing party, showing the depth of his concern over the recent tensions.

U.S. President Donald Trump called Japanese Prime Minister Sanae Takaichi this week and advised her not to provoke Beijing on the question of Taiwan's sovereignty, the Wall Street Journal reported on ...

Takaichi's off-the-cuff remark in parliament earlier this month that a hypothetical Chinese attack on Taiwan could trigger Japanese military action prompted a furious response from Beijing that has in...