I think they thought it would be far better that America developed the bomb than Nazis Germany, and the Allies needed to do whatever it too to stop Hitler, even if that did mean using nuclear bombs.
Japan and the Soviet Union were more complicated issues for some of the scientists. But that's what happens with warfare. You develop new weapons, and they aren't just used for one enemy.
Japan and the Soviet Union were more complicated issues for some of the scientists. But that's what happens with warfare. You develop new weapons, and they aren't just used for one enemy.