The Korean War was a conflict on the Korean peninsula between the Republic of Korea and the Democratic Peoples Republic of Korea, otherwise known respectively as South and North Korea. Both sides waged war for control of the entirety of the nation with the aid of allies; the United States backing South Korea, while China and the Soviet Union backed North Korea.
The war was fought from 1950 to 1953 without a victor. The fighting was brought to an end with an armistice that divided Korea at the 38th parallel, but did not technically bring an end to the war. North and South Korea have since existed as independent nations on the peninsula, sharing an uneasy peace occasionally disrupted, usually by military action or political threats from North Korea.