Ambassador Max Kampelman. He was head of the U.S. delegation to the Geneva negotiations on nuclear and arms reduction. He also headed the U.S. delegation at the Madrid East-West Conference on Human Rights. Though a moderate Democrat, he worked for the Reagan and Bush administrations. And he was a pacifist until the end of World War Two when he realized that nuclear weapons changed the way wars would be waged. He's written a memoir, "Entering New Worlds: The Memoirs of a Private Man in Public Life." (HarperCollins Publishing).