Imho, it would have been dereliction of duty or even treason if Truman didn’t drop the bombs.
5.56mm
The idea that the nuclear bombing of Japan was a humanitarian act is set in stone. If you disagree you are some kind of lunatic. The bombing may have been necessary to impress the Russians but it did not necessarily shorten the war. The Japanese military was reluctant to surrender because they were aware of what was happening in Germany (The Morgenthau Plan). They were concerned about rape and pillage for good reason. The apparent insistence on unconditional surrender prolonged the conflict. Japanese pilots were not crazy. They sacrificed their lives for their country. Some people cannot understand this concept. The number of Russian casualties is frequently brought up. How many of these 26 million were killed by the Russians? The Russians could be accused of “stabbing Japan in the back” like Italy’s invasion of France. Their non-aggression pact was still valid. World War II may not have been the bloodiest human or natural catastrophe in history, accounting for more than 65 million dead. That honor might belong to Mao who is frequently credited with 100 million deaths. Thanks to FDR Russia was allocated two Chinese ports and concessions in Manchuria. How could he give our Chinese allies’ ports away? The Russians captured nearly a million slaves and the arms that they supplied to Mao. Had Japan been allowed to keep Korea and Manchuria they would have surrendered earlier and this would have saved many more American lives.