The 5th Cambodia, Laos, Myanmar and Vietnam (CLMV) Summit opened here on Tuesday afternoon, aiming to set out future directions of the CLMV cooperation. Cambodian Prime Minister Hun Sen, Lao Prime Minister Bouasone Bouphavanh, Myanmar Prime Minister Thein Sein and Vietnamese Prime Minister Nguyen Tan Dung attended the summit. 'This Fifth Summit is of great significance,' Hun Sen said in his opening speech. It offers an opportunity for the peoples and governments of the four countries to reaffirm their determination to deepen traditional relations, added Hun Sen. The meeting will review the cooperation progress and set out future directions for CLMV cooperation. It is expected to adopt a joint statement of the summit. The CLMV cooperation was established to narrow development gap and to accelerate the integration of the four countries in order to catch up with the other six ASEAN members. ASEAN, established in 1967, groups Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand and Vietnam. The 1st CLMV summit was held in Vientiane in November 2004. Under the CLMV cooperation, an Action Plan covering nine areas of cooperation has been adopted. In this framework, 58 concrete projects were adopted at the 4th CLMV summit in Hanoi in 2008. 