The United States detonated two nuclear weapons over the Japanese cities of Hiroshima and Nagasaki on August 6 and 9, 1945, respectively, with the consent of the United Kingdom, as required by the Quebec Agreement. The two bombings killed between 129,000 and 226,000 people, most of whom were civilians, and remain the only use of nuclear weapons in armed conflict.
The question of military necessity can be quickly put to rest. “Japan was already defeated and dropping the bomb was completely unnecessary.” They are the words of Dwight D. Eisenhower, Supreme Commander of the Allied Forces in Europe and future president of the United States. Eisenhower knew, as did the entire senior U.S. officer corps, that by mid 1945 Japan was defenseless.
But if dropping the bombs was not driven by military needs, why, then, were they used? The answer can be discerned in the U.S. attitude toward the Russians, the way the War ended in Europe, and the situation in Asia.
So, on August 6, 1945, two days before the Russians were to declare war against Japan, the U.S. dropped the bomb on Hiroshima. There was no risk to U.S. forces then waiting for a Japanese response to the demand for surrender. The earliest planned invasion of the island was still three months away and the U.S. controlled the timing of all military engagements in the Pacific. But the Russian matter loomed and drove the decision on timing. So, only three days later, the U.S. dropped the second bomb on Nagasaki. The Japanese surrendered on August 14, 1945, eight days after the first bomb was dropped.
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