The Korean War (1950-1953) was a conflict between North Korea, backed by the Soviet Union and China, and South Korea, supported by the United States and the UN.
It began when North Korea invaded South Korea, prompting UN intervention in defense of the South, led by the United States. The war was characterized by changes in territorial control and numerous battles.
The conflict concluded with a ceasefire in 1953, leaving the peninsula divided by the Demilitarized Zone. The war resulted in thousands of deaths and the enduring division between North Korea and South Korea.