The world isn't black and white. Work began on the bomb when there was an existential threat to the country in the form of Nazi Germany. What little Feynman s

The world isn't black and white. Work began on the bomb when there was an existential threat to the country in the form of Nazi Germany. What little Feynman spoke about the bomb after the war makes it seem like he didn't agree with the way it was used either. Additionally, many other physicists fought the way it was used at the time.