The Korean peninsula is divided into two countries - North Korea and South Korea. North Korea is bounded by Russia and China, with Pyongyang as its capital. South Korea has Seoul as its capital and is more westernized. The peninsula was divided after World War 2, with North Korea supported by the Soviet Union and China and South Korea supported by the United States. In 1950, North Korea invaded South Korea in an attempt to reunify the peninsula under communist rule, triggering the Korean War. Though North Korea initially succeeded, the United States led a United Nations force that pushed them back. An armistice in 1953 established the current border between North and South Korea along the 38th parallel.