"International non-governmental organisations and transnational activism are a prominent feature of contemporary world politics. This book sheds uniquely valuable historical light on these phenomena by providing an in-depth study of one of the most substantial international nongovernmental campaigns ever to have been undertaken: the campaign for disarmament that took place between the two World Wars, which mobilised organisations that claimed a combined membership as high as half of the population of the world at the time. Based on extensive research into more than eighty governmental and non-governmental archives in five countries, this book forces us to reconsider our assumptions about the possibilities and limits of transnational civil society."--BOOK JACKET.