In World War II, the United States took the lead in developing nuclear weapons, and after successful development, it quickly put atomic bombs into actual combat. The United States dropped two atomic bombs on Japan in the late part of World War II, making it the first country to use nuclear weapons, and of course the only country to do so. The great power after the atomic bomb explosion far exceeded the imagination of all countries in the world, and under the explosion of the atomic bomb, the international status of the United States was improved, and the atomic bomb became the killer weapon of the United States. In the battlefield of the War to Resist US Aggression and Aid Korea during the Korean War, the United States even planned to use nuclear weapons again.
In the early stages of the Korean War, the South Korean regime was gradually defeated, and in the future, only the Busan area was still under control. In order to support the South Korean government and leave its own forces on the Korean Peninsula, the United States chose to participate in the war, and the Chinese army had to participate in the war as the United States entered the war. After the Chinese army entered the war, the US military was harshly taught a lesson, and even wanted to use nuclear weapons in order to win. But in the end, the United States would rather fail than use an atomic bomb, why? The Americans told the truth about this: I really dare not use it.
The Korean War was originally just a civil war, a war of reunification launched by the Korean government. In the early days of the Korean War, none of the countries participated in the war, but the United States landed at Inchon when South Korea could not hold on. After the U.S. military entered the war, the North Korean army was quickly defeated, and the U.S. military has spread the war to the Sino-North Korean border since then, and China is already in a cold situation.
Through several meetings, the Chinese high-level finally decided to enter the DPRK and participate in the war, and the War to Resist US Aggression and Aid Korea broke out. After the Chinese army entered the war, the situation changed rapidly, and later the US military was directly frightened by the volunteer army and planned to use the atomic bomb, but for various reasons, the US military did not use the atomic bomb when it was directly in the Korean War.
By the middle and late stages of the Korean War, it had become a war between many countries for spheres of influence. Although the Soviet Union participated in the war mainly to provide materials and air force, the Soviet Union and China had many similar interests in the Korean War, so the Soviet Union must also win this war.
The United States did not want to start an all-out war with China and the Soviet Union at that time, so when MacArthur wanted to use the atomic bomb in the Korean War, he was rejected by President Harry Truman. Truman did not want World War III to break out because of the Korean War, so the use of atomic bombs could only be controlled to the extent of deterrence.
Truman released the news that he intended to use the atomic bomb in the Korean War, but this news did not scare the Soviet Union and China, but rather frightened other countries. In order to avoid the expansion of the war, the thirteen countries at that time issued a statement hoping that China would not engage in further war after it reached the 38th Parallel. Moreover, the United States was also warned by other countries at that time, hoping that the United States would not use atomic bombs, so in the end the United States did not dare to use atomic bombs.
The escalation of the war that the United States exercised with restraint in the Korean War brought the world off the brink of war. Truman was not held accountable after the war, but MacArthur was stripped of his supreme command of the Korean theater, and even the final armistice was signed by General Clark.
The Korean War was China's battle for national prestige, because of the victory of this war, China's international status was improved, the Soviet Plan was finally foiled, and after the war, the Soviet Union honestly handed over all the control of the northeast region to China.