Laos is a country in and the only landlocked nation in mainland Southeast Asia, northeast of Thailand and west of Vietnam. It covers approximately 236,800 square kilometers in the center of the Southeast Asian peninsula and it is surrounded by Myanmar (Burma), Cambodia, the People's Republic of China, Thailand, and Vietnam. About seventy percent of its geographic area is made up of mountain ranges, highlands, plateaux, and rivers cut through. Historically, its location has often made it a buffer state between more powerful neighboring states, particularly for the ancestral rulers of the modern-day Burmese, Vietnamese and Thais, as well as a crossroads for trade and communication. (Source: Wikipedia.org, CC BY-SA)