Glover, Jonathan. _Humanity: A Moral History of the Twentieth Century_. Yale Nota Bene. New Haven, CT: Yale University Press, 2001.
In 1956, it was proposed that Oxford University give an honorary degree to President Truman. These proposals were always accepted and few University members bothered to vote on them. But on the day it was proposed, the Congregation was full because there was another controversial proposal to limit the Greek New Testament in the Theology degree. Unexpectedly, one member, GE Anscombe, stood up to oppose the Truman proposal, because he was "the man who pressed the button", referring to the atomic bomb.
She gave a passionate speech. The main moral argument was that it was not permissible to kill innocent people as a means to an end. This should always be considered murder. One witness said that the speech was met with "the complete silence and impassivity of those present ... not the slightest sign of approval or disapproval, not a murmur, not a rustle, not a change of countenance, but only utter imperturbability." Some say Anscombe was in a minority of one. Others say that Philippa Foot voted against it with her.
She wrote her speech into a pamphlet entitled Mr Truman's War (on Zotero.)