FILE - In this Monday, Sept. 24, 2012 file photo, Japan Coast Guard vessel sails along with Chinese surveillance ship Haijian No. 66, foreground, near disputed islands the Senkaku in Japan and Diaoyu in China, in the East China Sea. China is trying to strengthen its claim on tiny, uninhabited, Japanese-controlled islands by raising questions about the much larger Okinawa chain that is home to more than a million Japanese along with major U.S. military installations. The tactic, however, appears to have done little but harden Tokyo's stance. (AP Photo/Kyodo News, File) JAPAN OUT, MANDATORY CREDIT
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