Philippine President Benigno Aquino III (left) talks with Myanmar President Thein Sein after a group photograph at the opening ceremony of the 20th ASEAN summit in Phnom Penh, Cambodia, on Tuesday, April 3, 2012. (AP Photo/Apichart Weerawong)

Photo by: Apichart Weerawong

Philippine President Benigno Aquino III (left) talks with Myanmar President Thein Sein after a group photograph at the opening ceremony of the 20th ASEAN summit in Phnom Penh, Cambodia, on Tuesday, April 3, 2012. (AP Photo/Apichart Weerawong)