The Mekong River is one of the longest rivers in Asia, flowing through China, Myanmar, Laos, Thailand, Cambodia and Vietnam. It supports 60 million people through fishing and agriculture. The Tonle Sap Lake in Cambodia uniquely changes direction during the wet and dry seasons, expanding and contracting dramatically in size. This makes it one of the most productive inland fisheries in the world, providing most of the protein for Cambodia. The Mekong River Commission was established to manage the cooperation and sustainable development of the Mekong River Basin.