Congratulatory Letters of Samdech Akka Moha Sena Padei Techo HUN SEN, Prime Minister of the Kingdom of Cambodia, addressed to His Excellency Pham Minh Chinh, Prime Minister of the Socialist Republic of Viet Nam, on the occasion of the 55th Anniversary of the Establishment of the Diplomatic Relations between Cambodia and Viet Nam. - Ministry of Foreign Affairs and International Cooperation