Page 825 - US History

Chapter 27 | Fighting the Good Fight in World War II, 1941-1945 815
Figure 27.21 According to estimates, the atomic bombs dropped on Hiroshima and Nagasaki (a) together killed anywhere from 125,000 to over 250,000 people. The so-called Genbaku (A-Bomb) Dome, now the Hiroshima Peace Memorial, was the only building left standing near the Hiroshima bomb’s hypocenter (b).
The decision to use nuclear weapons is widely debated. Why exactly did the United States deploy an atomic bomb? The fierce resistance that the Japanese forces mounted during their early campaigns led American planners to believe that any invasion of the Japanese home islands would be exceedingly bloody. According to some estimates, as many as 250,000 Americans might die in securing a final victory. Such considerations undoubtedly influenced President Truman’s decision. Truman, who had not known about the Manhattan Project until Roosevelt’s death, also may not have realized how truly destructive it was. Indeed, some of the scientists who had built the bomb were surprised by its power. One question that has not been fully answered is why the United States dropped the second bomb on Nagasaki. As some scholars have noted, if Truman’s intention was to eliminate the need for a home island invasion, he could have given Japan more time to respond after bombing Hiroshima. He did not, however. The second bombing may have been intended to send a message to Stalin, who was becoming intransigent regarding postwar Europe. If it is indeed true that Truman had political motivations for using the bombs, then the destruction of Nagasaki might have been the first salvo of the Cold War with the Soviet Union. And yet, other historians have pointed out that the war had unleashed such massive atrocities against civilians by all belligerents—the United States included—that by the summer of 1945, the president no longer needed any particular reason to use his entire nuclear arsenal.
Click and Explore
Visit the Atomic Bomb Museum site (http://openstaxcollege.org/l/15ABomb) to read the accounts of survivors Hiroshi Morishita and Shizuko Nishimoto.