— Fleet Admiral Chester W. Nimitz, Commander in Chief of the U.S. Pacific Fleet
The use of [the atomic bombs] at Hiroshima and Nagasaki was of no material assistance in our war against Japan. The Japanese were already defeated and ready to surrender because of the effective sea blockade and the successful bombing with conventional weapons ... The lethal possibilities of atomic warfare in the future are frightening. My own feeling was that in being the first to use it, we had adopted an ethical standard common to the barbarians of the Dark Ages. I was not taught to make war in that fashion, and wars cannot be won by destroying women and children.
— Fleet Admiral William D. Leahy, Chief of Staff to President Truman, 1950
The atomic bomb had nothing to do with the end of the war at all.
— Major General Curtis LeMay, XXI Bomber Command, September 1945
The first atomic bomb was an unnecessary experiment ... It was a mistake to ever drop it ... [the scientists] had this toy and they wanted to try it out, so they dropped it
— Fleet Admiral William Halsey, Jr. 1946
In 1945 Secretary of War Stimson, visiting my headquarters in Germany, informed me that our government was preparing to drop an atomic bomb on Japan. I was one of those who felt that there were a number of cogent reasons to question the wisdom of such an act. During his recitation of the relevant facts, I had been conscious of a feeling of depression and so I voiced to him my grave misgivings, first on the basis of my belief that Japan was already defeated and that dropping the bomb was completely unnecessary, and secondly because I thought that our country should avoid shocking world opinion by the use of a weapon whose employment was, I thought, no longer mandatory as a measure to save American lives
- Dwight D Eisenhower
Based on a detailed investigation of all the facts, and supported by the testimony of the surviving Japanese leaders involved, it is the Survey's opinion that certainly prior to 31 December 1945, and in all probability prior to 1 November 1945, Japan would have surrendered even if the atomic bombs had not been dropped, even if Russia had not entered the war, and even if no invasion had been planned or contemplated.
- 1946 United States Strategic Bombing Survey
"...when we didn't need to do it, and we knew we didn't need to do it, and they knew that we knew we didn't need to do it, we used them as an experiment for two atomic bombs."
- Brigadier General Carter Clarke, the military intelligence officer in charge of preparing intercepted Japanese cables - the MAGIC summaries - for Truman and his advisors
Early critics of the bombings were Albert Einstein, Eugene Wigner and Leó Szilárd, who had together spurred the first bomb research in 1939 with a jointly written letter to President Roosevelt. Szilárd, who had gone on to play a major role in the Manhattan Project, argued:On August 8, 1945, after the atomic bombing of Hiroshima, Hoover wrote to Army and Navy Journal publisher Colonel John Callan O'Laughlin, "The use of the atomic bomb, with its indiscriminate killing of women and children, revolts my soul."
Norman Cousins was a consultant to General MacArthur during the American occupation of Japan. Cousins writes of his conversations with MacArthur, "MacArthur's views about the decision to drop the atomic bomb on Hiroshima and Nagasaki were starkly different from what the general public supposed." He continues, "When I asked General MacArthur about the decision to drop the bomb, I was surprised to learn he had not even been consulted. What, I asked, would his advice have been? He replied that he saw no military justification for the dropping of the bomb. The war might have ended weeks earlier, he said, if the United States had agreed, as it later did anyway, to the retention of the institution of the emperor."
John McCloy, Assistant Sec. of War: "I have always felt that if, in our ultimatum to the Japanese government issued from Potsdam [in July 1945], we had referred to the retention of the emperor as a constitutional monarch and had made some reference to the reasonable accessibility of raw materials to the future Japanese government, it would have been accepted. Indeed, I believe that even in the form it was delivered, there was some disposition on the part of the Japanese to give it favorable consideration. When the war was over I arrived at this conclusion after talking with a number of Japanese officials who had been closely associated with the decision of the then Japanese government, to reject the ultimatum, as it was presented. I believe we missed the opportunity of effecting a Japanese surrender, completely satisfactory to us, without the necessity of dropping the bombs."
“Every act of war directed to the indiscriminate destruction of whole cities or vast areas with their inhabitants is a crime against God and man, which merits firm and unequivocal condemnation.” (Catechism of the Catholic Church 2314)
CONCLUSION: FDR and Truman, both Democrats, committed crimes against humanity by deliberately targeting civilians. FDR was compounding his crime of interning Japanese-Americans without benefit of trial, taking their land and years of their lives without just compensation.