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The Soviet Union detonated its first atomic bomb, known in the West as Joe-1, on Aug. 29, 1949, at Semipalatinsk Test Site, in Kazakhstan. -
n 30 June 1950, the British cartoonist, David Low, illustrates the determination of both the US President, Harry Truman, and the United Nations (UN) to bring to an end the invasion of South Korea by Communist North Korean troops using military means, thereby ending the pacifism which had prevailed in the interw -
The United States detonates the world's first thermonuclear weapon, the hydrogen bomb, on Eniwetok atoll in the Pacific. The test gave the United States a short-lived advantage in the nuclear arms race with the Soviet Union. -
The Vietnam War, also known as the Second Indochina War, was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam and South Vietnam. -
The world's first artificial satellite, Sputnik 1, was launched by the Soviet Union in 1957, marking the start of the space race. -
, Soviet thermonuclear bomb that was detonated in a test over Novaya Zemlya island in the Arctic Ocean on October 30, 1961. The largest nuclear weapon ever set off, it produced the most powerful human-made explosion ever recorded. -
The Cuban Missile Crisis, also known as the October Crisis of 1962, the Caribbean Crisis, or the Missile Scare, was a 1-month, 4 day confrontation between the United States and the Soviet Union -
John Fitzgerald Kennedy, often referred to by his initials JFK, was an American politician who served as the 35th president of the United States from 1961 until his assassination near the end of his third year in office