The most spectacular episode of Truman’s presidency will never be forgotten, but will be forever linked to his name: the atomic bombings of Hiroshima on August 6, 1945, and of Nagasaki three days later. Probably around two hundred thousand persons were killed in the attacks and through radiation poisoning; the vast majority were civilians, including several thousand Korean workers. Twelve U.S. Navy fliers incarcerated in a Hiroshima jail were also among the dead.
Great controversy has always surrounded the bombings. One thing Truman insisted on from the start: The decision to use the bombs, and the responsibility it entailed, was his. Over the years, he gave different, and contradictory, grounds for his decision. Sometimes he implied that he had acted simply out of revenge. To a clergyman who criticized him, Truman responded, testily:Nobody is more disturbed over the use of Atomic bombs than I am but I was greatly disturbed over the unwarranted attack by the Japanese on Pearl Harbor and their murder of our prisoners of war. The only language they seem to understand is the one we have been using to bombard them.
Such reasoning will not impress anyone who fails to see how the brutality of the Japanese military could justify deadly retaliation against innocent men, women, and children. Truman doubtless was aware of this, so from time to time he advanced other pretexts. On August 9, 1945, he stated: "The world will note that the first atomic bomb was dropped on Hiroshima, a military base. That was because we wished in this first attack to avoid, insofar as possible, the killing of civilians."
This, however, is absurd. Pearl Harbor was a military base. Hiroshima was a city, inhabited by some three hundred thousand people, which contained military elements. In any case, since the harbor was mined and the U.S. Navy and Air Force were in control of the waters around Japan, whatever troops were stationed in Hiroshima had been effectively neutralized.
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(And if you're not aware of why I titled the post this way, that quote was made by J. Robert Oppenheimer, the scientific director of the Manhattan Project, after witnessing his handiwork at a test site in New Mexico. It is said that most of the scientists involved in the Manhattan Project later expressed remorse for what they had wrought.)