On 17 November 2010 at the Throne Hall, HM the King granted an audience to a delgation led by Prime Minister Samdech Hun Sen as Chairman of the 6th Summit Conference Cambodia-Laos-Vietnam, and of the 5th Summit Conférence Cambodia-Laos-Myanmar-Vietnam, and of the 4th Summit Conférence « Ayeyavady Chao Praya Mekong » ACMES. The members of the delegation included : - H.E. Mr. Bouasone Bouphavanh, Prime Minister of the Lao People’s Democratic Republic - H.E. Mr. Thein Sein, Prime Minister of Myanmar Republic of the Union of Myanmar, - H.E. Mr. Abhisit Vejajiva, Prime Minister of the Kingdom of Thailand, - H.E. Mr. Nguyen Tan Dung , Prime Minister of the Socialist Republic of Vietnam