Korean War (1950-1953): Summary, Background and Causes

We explain what the Korean War was and who fought it. Also, the intervention of the USA and the USSR in the context of the Cold War.

The Korean War pitted nationalists and communists for control of the Korean peninsula.

What was the Korean War?

The Korean War was a military conflict in which The governments of North Korea and South Korea clashed for control of the Korean Peninsula.. It took place between 1950 and 1953, and was the first armed conflict of the Cold War.

The conflict It began as a civil war between the different Korean power factions who were fighting for the government of Korea. The communists had established a government under the leadership of Kim Il Sung in the north and the nationalists the government of Syngman Rhee in the south.

However, both the United States and the Soviet Union became directly involved and The fight became a major international dispute. In the context of the beginning of the Cold War, the outcome of the dispute in Korea affected the interests of both powers. The USSR and China sent their troops to support North Korea, and the United States, for its part, pressured the United Nations to send a group of troops from Western countries to support the nationalist side (South Korea).

Due to the number of combatants involved and the level of militarization that the conflict reached, The Korean War was one of the most brutal wars in history. It is estimated that there were between 2,500,000 and 3,000,000 combatants fallen and more than 10% of the civilian population was killed or disappeared in those years. The consequences of the war were far-reaching as they defined the international political scenario that marked the Cold War for the next fifty years.

The war ended with an armistice that established the definitive separation of the Korean peninsula into two independent countries.In South Korea, the nationalist government maintained the dictatorship of Syngman Rhee and remained aligned with the United States. In North Korea, Kim Il Sung installed a communist dictatorship that continues to this day under the rule of his son Kim Jong-un.

Background to the Korean War

Since 1910, Korea was part of the Empire of Japan. However, when Japan was defeated in World War II, North Korea was occupied by USSR troops and the United States Army settled in South Korea.. Temporarily, the USSR and the USA decided to divide the territory along the 38° parallel. This division was to end when the occupying armies withdrew from the country.

However, when this happened in 1949, both the northern and southern authorities proclaimed themselves the legitimate government of Korea.

  • In North Korea The Democratic People’s Republic of Korea was established led by Kim Il Sung, with a communist political and economic system and the support of the Soviet Union.
  • In South Korea The government proclaimed the Republic of Korea, with a dictatorship in the hands of Syngman Rhee supported by American forces.

Development of the Korean War

Kim Il Sung led the North Korean communists with the support of Soviet and Chinese troops.

In 1950, the Syngman Rhee government asked the United States for military and economic support to advance on the border with North Korea. For his part, Kim Il Sung had been negotiating with the Soviet Union for support in achieving total control of the Korean peninsula. Finally, Stalin (leader of the USSR) authorized the intervention of Soviet troops to support Kim Il Sung and invade South Korea.

North Korean troops, known as the Korean People’s Army, managed to advance rapidly into South Korean territory. By September 1950, they had managed to occupy most of the peninsula.

However, the United Nations (UN), under US pressure, decided to intervene in the conflict and sent an international force made up of troops from different Western countries. UN forces managed to stop the North Korean advance and make it retreat to the Yalú River, beyond the 38th parallel.

Faced with this situation, Stalin pressured Mao Zedong (the leader of the People’s Republic of China, a country that had recently turned to communism) to get involved in the Korean War and to support the North Koreans militarily. In October, More than 300,000 Chinese soldiers were sent into combat and managed to recover North Korean possessions. between the Yalu River and the 38th parallel.

Between 1951 and 1953, the front between the two sides remained stagnant in that position and neither of the armies achieved significant advances over their opponent. Finally, it was decided to end the conflict and maintain the division of the peninsula into two independent countries.

In July 1953, North Korea and South Korea signed the armistice that ended the Korean War. A demilitarized border zone was established at the 38th parallel to divide both countriesThis situation continues today.

Results of the Korean War

It is estimated that more than 10% of the civilian population died or went missing during the Korean War.

The Korean War was very destructive. As in most civil wars, atrocities were carried out against both military and civilians. It is estimated that more than a tenth of the civilian population was injured, killed or disappeared during those years.

The exact number of total fallen combatants is not known (because the Soviet Union kept its records secret), but it is believed that the figure amounts to 2,500,000 people (including dead and missing).

The political consequences of the war were very important and had great international reach. The Korean War was the first armed conflict of the Cold War and precipitated the militarization of the powers.

The United States expanded its military bases in Europe and its assistance to the Allies to allow Germany to re-arm. It also sought to extend its alliances to prevent all Asian countries from falling into the Communist Bloc. It promoted an alliance with Japan (defeated in World War II) and, by purchasing its weapons and military technology, helped its post-war capitalist economic restructuring.

For its part, The Soviet Union rearmed the communist countries of Eastern EuropeChina began an unprecedented military investment and created its air force. However, the relationship between the different leaders of the communist countries became strained.

Although the USSR and China sent their troops to assist Kim Il Sung, the North Korean leader decided to maintain an independent path against Stalin and Mao. He had lost prestige and power by having to resort to military assistance and he decided to recover them, from now on without the protection or protection of the rest of the communist States.

The Korean War created a political configuration of Northeast Asia that remains today., beyond the Cold War. The Korean peninsula remains divided into two separate countries with opposing political and economic systems. While South Korea and Japan maintain their close relationship with the United States, North Korea managed to maintain a communist dictatorship to this day.

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References

  • Millett, Allan R. (2023). “Korean War”. Encyclopedia Britannica https://www.britannica.com/
  • Palmowski, J. (2000). “Korean War”. A dictionary of twentieth-century world history. Oxford University Press.
  • Suh, DS (1988). Kim Il Sung: The North Korean Leader. Columbia University Press.
  • Van Dijk, R., Gray, W.G., Savranskaya, S., Suri, J., & Zhai, Q. (Eds.). (2013). “Korean War”. Encyclopedia of the Cold War. Routledge.