TOKYO - NOVEMBER 06: Japanese Prime Minister Yukio Hatoyama hosts the Mekong-Japan Summit Meeting with Cambodian Prime Minister Hun Sen, Laotian Prime Minister Bouasone Bouphavanh, Myanmar Prime Minister Thein Sein, Thai Prime Minister Abhisit Vejjajiva and Vietnamese Prime Minister Nguyen Tan Dung at Hatoyama's official residence on November 6, 2009 in Tokyo, Japan. The two-day meeting is held to develop the relationships with Japan and five countries of the Mekong region.