* From 1910 - 1945, Korea was under the occupation of Japan
* After WW2 ended, the Korean Peninsula was occupied by US forces in the south and Soviet forces in the north and divided at the 38th parallel line
* Because of the Cold War rivalry between the two superpowers, they could not reach an agreement in reuniting both sides
* Stalin wanted to support the communist regime under Kim 2-Sung, while US president Truman wanted to support the capitalist regime led by Syngman Rhee
* In 1948, the communist nation, the Democratic People’s republic was formed in North Korea, while the Republic of Korea was formed in the south
* In June 1950, North Korea invaded the south attempting to take back its territory under the communist banner
* The United States with the support of the United Nations intervened to help the south drive out the communist but by mid-September, North Korea occupied all but a small corner of South Korea.
* The US feared that a victory in the south would spread communism with the USSR’s capital, Moscow in charge
* The US Department believed that Stalin and Mao had planned the invasion of South Korea
* What we know now is that Mao did support the invasion, but he didn’t plan it
* His focus instead was to bring back the PLA units from the reunification campaigns in Tibet and in other regions
* Mao was unsure of Stalin’s motives
* Stalin boycotted the UN Security Council after they refused to recognize Mao’s government as the legitimate government of China
* He backed the invasion of the South, but he told Kim 2-Sung he didn’t intend to help
* When the UN forces pushed the North Koreans back towards the 38th parallel line, Mao realized the risk of the United States pushing even further and eventually invading China
* This triggered Mao to pursue his military commanders into action by sending Chinese troops
* One of his commanders, Lin Biao wanted to concentrate on crushing their internal issues
* By sending troops, Mao also hoped to get Soviet technology and equipment
* By 1950, a quarter million PLA troops were sent into Korea - this number would rise to 3 million