Mongolia is a landlocked country in East Asia, bordered by Russia to the north and China to the south. It covers an area of 1,564,116 square kilometres saint georges The United States established diplomatic relations with Mongolia in 1987. Bordered by Russia and China, Mongolia describes the United States as its most Mongolia is a landlocked country in East Asia, bordered by Russia to the north and China to the south. It covers an area of 1,564,116 square kilometres Mongolia, landlocked country in north-central Asia. Its remarkable variety of scenery consists largely of upland steppes, semideserts, and deserts,