A Japan Coast Guard boat (front) and vessel sail as Uotsuri island, one of the disputed islands, called Senkaku in Japan and Diaoyu in China, is pictured in the background, in the East China Sea August 18, 2013. Boats carrying about 20 members of a Japanese nationalist group headed back to port on Sunday after sailing near tiny islands in the East China Sea that are at the centre of a dispute between Japan and China. The boats were surrounded by about 10 Japanese coast guard vessels when they approached within 1 nautical mile of the islands on Sunday morning. Coast guard crews in rubber boats urged them to leave through loudspeakers. REUTERS/Ruairidh Villar (JAPAN – Tags: POLITICS MARITIME)