The document discusses the start of the Korean War in 1950. It summarizes that North Korea invaded South Korea after Kim Il Sung gained approval from Stalin and Mao Zedong. The US was alarmed by the communist expansion and persuaded the UN to support South Korea. General MacArthur led US troops that drove back the North Koreans but then China entered the war and pushed the US back. After more fighting, an armistice was eventually signed in 1953 under Eisenhower to end the war.