President Barack Obama participates in a Lower Mekong Initiative (LMI) group photo at the ASEAN Summit at Peace Palace in Phnom Penh, Cambodia, Nov 20, 2012.  Pictured, from left: Thailand Prime Minister Yingluck Shinawatra; Vietnamese Prime Minister Nguyen Tan Dung; Prime Minister Hun Sen of Cambodia: President Barack Obama; President Thein Sein of Burma; and Prime Minister Thongsing Thammavong of Laos.

Source: U.S. Department of State

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