FILE - In this Sept. 2, 2012 file photo, the survey ship Koyo Maru, left, chartered by Tokyo city officials, sails around Minamikojima, foreground, Kitakojima, middle right, and Uotsuri, background, ... more 
FILE - In this Sept. 2, 2012 file photo, the survey ship Koyo Maru, left, chartered by Tokyo city officials, sails around Minamikojima, foreground, Kitakojima, middle right, and Uotsuri, background, the tiny islands in the East China Sea, called Senkaku in Japanese and Diaoyu in Chinese. 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 less 
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Associated Press | Photo By Kyodo News, File
Wed, May 15, 2013 3:57 AM EDT