The country was split in half at the 38th parallel: North Korea – Communist – led by Kim Il Sung, South Korea – Capitalist (pro-USA) – led by Syngman Rhee.
China became Communist in 1949.
The USA feared that Communist might spread in Asia.
Domino theory: Truman believed that, if one country fell to Communism, then others would follow, like a line of dominoes.
Undermine Communism: Some Americans wanted to abandon 'containment' and start 'rolling back' Communism.
Cold War: By supporting South Korea, America was able to fight Communism without directly attacking Russia.
Kim Il Sung (the Communist leader of North Korea) visited Stalin and Mao (leader of China) both the USSR and China offered their support to him.
Syngman Rhee (the Capitalist leader of South Korea) boasted that he was going to attack North Korea.
In revenge, the North Koreans invaded South Korea.
The Vietcong were supplied with weapons by China and Russia.
The Vietcong were fanatically determined to drive out the Americans, whatever the cost.
The South Vietnamese peasants supported and sheltered the Vietcong, who had also resisted the Japanese during the Second World War.
American troops did help prevent the Vietcong and the North Vietnamese Army taking over Vietnam for many years.
The North Vietnamese were motivated, fighting at home to unite their country.
The Vietcong's tactics, which included guerilla war, ambushing US patrols, setting booby traps and landmines, and planting bombs in towns, were appropriate to the nature of the conflict.
Containment in Vietnam was achieved by the US, as evidenced by the fact that communism did not spread to Burma, India etc.
The US was trying to supply a war 8,000 miles from America.
The war became very unpopular in the US, and lost public support.
American soldiers had a short (one-year) tour of service, which meant they were always inexperienced.
The US was unsuccessful in Vietnam, as evidenced by the fall of the whole of Vietnam to communism.
The South Vietnamese regime was weak, brutal and corrupt.
America’s reaction: after the North invaded the South (June 1950) Truman (USA president): sent advisers, supplies and warships to Korea, put pressure on the UN (United Nations) to get North Korea to withdraw from (leave) South Korea.
The UN agreed because China and the USSR were not at the UN at the time (the USSR was boycotting the UN for refusing to allow Mao’s China to join)
This meant that the UN could get involved without the USSR vetoing the decision.
The USA did push the North Koreans out of South Korea… but then they continued.
USA army leader: General MacArthur.
The USA/UN troops pushed all the way into North Korea – right up to the Chinese border.
China – with USSR support – fought back.
They fought the Americans back to the original North/South border (the 38th parallel).
General MacArthur and President Truman disagreed; MacArthur wanted to fight back and even invade China.
Truman was happy to keep the Communists out of South Korea only.
Armistice (end of fighting) was signed, July 1953.
The Cuban Revolution: The USA had been an old ally of Cuba. Until the Cuban Revolution, Cuba had been ruled by Batista (who was pro-American).
Kennedy was seen as the man who faced down the Russians.
Secretly, the Americans suggested a trade-off of missile bases - US bases in Turkey for Russian bases in Cuba.
With his advisers, Khrushchev decided on a naval blockade to prevent Russian ships delivering the missiles for the Cuban sites.
In October 1962, a US spy plane discovered a nuclear weapons base being built on Cuba.
Nuclear weapons on Cuba could have destroyed American cities.
Kennedy ignored the U2 attack and agreed publicly to the first letter, and secretly to the second.