List of ambassadors of the United States to South Korea
At the end of World War II, American forces accepted Imperial Japan's surrender in southern Korea, and Soviet forces accepted the surrender of the Japanese in northern Korea. Talks to agree upon a unity government for Korea failed and in 1948, two separate Korean states were created: the Republic of Korea (South Korea) and the Democratic People's Republic of Korea (North Korea). The United States established diplomatic relations with the new South Korean government, but did not recognize North Korea. Other countries, like the Soviet Union, recognized the Pyongyang government in North Korea, but did not initially establish relations with the South Korean government in Seoul.
North Korea–Russia relations
Diplomatic relations between North Korea (Democratic People's Republic of Korea, DPRK) and the Soviet Union (Union of Soviet Socialist Republics, USSR, the predecessor state to the Russian Federation) were first established on October 12, 1948 shortly after the Democratic People's Republic of Korea was proclaimed. During the Korean War, the Korean People's Army was supported by the Soviet military forces. North Korea was founded as part of the Communist bloc, and received major Russian support. China and the Soviet Union competed for influence in North Korea during the Sino-Soviet split in the 1960s, as the North Korea tried to maintain good relations with both countries.