Thread, which among other things undermines the whole "we knew the Japanese would surrender and never needed to drop the bomb" narrative. Truman had no regrets, but he recognized the gravity of using the bomb & wanted to proceed very, very carefully before dropping another. https://twitter.com/wellerstein/status/1160164468657217536 …
Painful decision, but he never doubted he had done the right thing. Always said it never cost him a night's sleep.