Korean War/Vietnam War/Cuban Missile Crisis

Korean War:  This war was fought in the early 1950s between the United Nations, supported by the United States, and the communist Democratic People's Republic of Korea(North Korea). 

Vietnam War: Conflict between South Vietnam, supported by US forces, and Communist North Vietnam. North Vietnam claimed victorious and therefore unification of Vietnam under communist rule occurred. 

Cuban Missile Crisis:

The Cuban Missile Crisis was a 13-day confrontation between the United States and the Soviet Union concerning Soviet ballistic missiles deployment in Cuba.