Both countries have summoned each other’s ambassadors after Prime Minister Sanae Takaichi said a Chinese attack on Taiwan could draw a military response from Tokyo.

Relations between Tokyo and Beijing have dramatically soured, with nationalist rhetoric in China and an apparent threat of beheading from one of its diplomats.

A Chinese diplomat’s call to cut off the prime minister’s “filthy head” signaled a revival of a combative style Beijing had tried to dial back.

TAIPEI, Taiwan — A deadly knife attack on a Japanese schoolboy in China has stoked frictions between the two countries and raised safety concerns at a time when China is trying to attract foreigners for work and travel. The 10-year-old student was ...

How Sanae Takaichi’s Taiwan remark stirred up a diplomatic storm between Japan and China - Japan moves closer to openly linking Taiwan’s security to its own as China responds with thinly veiled threat