TOKYO - NOVEMBER 07:  (L-R) Cambodian Prime Minister Hun Sen, Laotian Prime Minister Bouasone Bouphavanh, Japanese Prime Minister Yukio Hatoyama, Myanmar Prime Minister Thein Sein, Thai Prime Minister Abhisit Vejjajiva and Vietnamese Prime Minister Nguyen Tan Dung interact one another after a joint press conference following the Mekong-Japan Summit Meeting at Hatoyama's official residence on November 7, 2009 in Tokyo, Japan. The two-day meeting is held to develop the relationships with Japan and five countries of the Mekong region. Getty Images logo Getty Images 2 weeks ago

TOKYO - NOVEMBER 07: (L-R) Cambodian Prime Minister Hun Sen, Laotian Prime Minister Bouasone Bouphavanh, Japanese Prime Minister Yukio Hatoyama, Myanmar Prime Minister Thein Sein, Thai Prime Minister Abhisit Vejjajiva and Vietnamese Prime Minister Nguyen Tan Dung interact one another after a joint press conference following the Mekong-Japan Summit Meeting at Hatoyama's official residence on November 7, 2009 in Tokyo, Japan. The two-day meeting is held to develop the relationships with Japan and five countries of the Mekong region.