Laos is a landlocked country located in Southeast Asia bordered by Burma, Cambodia, China, Thailand, and Vietnam. Most of the country is mountainous and thickly forested and the Mekong River forms a large part of the western boundary with Thailand. The government system is a Communist state. The chief of state is the President and the head of government is the Prime Minister. Laos has a mixed economy in which the government has implemented gradual economic and business reforms to liberalize its domestic markets. Laos is a member of Association of Southeast Asian Nations (ASEAN).