30 November 2025

How the China-Japan Rift Could Cost Both Countries

Miranda Jeyaretnam

China and Japan have been locked in a diplomatic spat that could come at a heavy cost to both sides.

On Nov. 7, Japanese Prime Minister Sanae Takaichi suggested that an attack on Taiwan could constitute an existential threat to Japan and warrant a forceful response, prompting strong condemnation from Beijing. China has imposed a slew of economic measures that appear aimed at Japan, as its Commerce Ministry said Takaichi’s comments have “severely damaged” trade cooperation between the two countries. China claims sovereignty over the self-governed island of Taiwan and maintains the right to take control of it by force if necessary.

Tensions thus far show no sign of abating, with China sending a letter to the U.N. promising self-defense if Japan “dared to intervene militarily in the Taiwan Strait,” drawing criticism from Tokyo. On Friday, the Chinese embassy in Japan also posted on X that China has the “right to take direct military action” without U.N. Security Council authorization if Japan “takes any step to once again implement a policy of aggression. Takaichi for her part has refused to cave to pressure to retract her remarks, noting that they were consistent with Japan’s long-held position, while Japanese officials have sought to cool tensions through dialogue.

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