Nearly all the top physicists in the US with relevant knowledge took part in the Manhattan Project. Even Einstein, the pacifist, lent his name to the effort to

Nearly all the top physicists in the US with relevant knowledge took part in the Manhattan Project. Even Einstein, the pacifist, lent his name to the effort to persuade the US government to build an atom bomb before the Nazis.[1] I judge people much more by what they did after the war. Contrast Edward Teller's campaigning for the development of the H-bomb with the actions of Einstein, Robert Oppenheimer and Hans Bethe. 1. Einstein-Szilárd letter: https://en.wikipedia.org/wiki/Einstein%E2%80%93Szil%C3%A1rd_letter https://en.wikipedia.org/wiki/Einstein%E2%80%93Szil%C3%A1rd_...