There are three important groups of peace activists discussed in the two case studies presented here: the Pugwash Movement, and the Campaign for Nuclear Disarmament and the Committee of 100. There were, of course, many other groups throughout the world which also opposed nuclear weapons. An influential Canadian group was the Toronto Association for Peace – see the case study Working for Peace: Eva Sanderson and the Toronto Association for Peace, 1958-1972 under the theme Women for Peace.