Physics Monday Talks: "Oppenheimer is the Bomb: The Ethics of the Nuclear Age"

What could drive an isolationist nation into a second European war and inspire a pacifist such as Einstein to throw his support to the development of an atomic bomb? What could drive a country to trust a liar with Communist ties with the development of such a weapon? How could a war hero be stripped of their security clearance for no apparent reason? Everyone had their reasons - would YOU have decided any differently?