As China Flexes Its Muscles Japan Rethinks Its Defenses

TOKYO — Japan is in the midst of a gradual but significant shift to the right, acting more confrontationally in the region than at any time since World War II.

The shift applies strictly to Japan’s foreign policy and military strategy, not social issues, and has been driven both by China’s rapid maritime expansion — particularly its emphatic claims on contested territory — and by a growing sense here that Japan should recover the clout squandered amid two lost decades of economic stagnation.

Japan’s shift can be seen in an increasingly muscular role for the nation’s Self-Defense Forces (SDF), in a push among mainstream politicians to revise key portions of the pacifist constitution and in a new willingness to clash with China, particularly in the East China Sea, where U.S. Defense Secretary Leon E. Panetta said this week he was “concerned about conflict.”

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