This booklet proposes that citizens and governments think imaginatively about national and international security and take action for comprehensive arms reductions. The document is presented in eight chapters. Chapter I reports that global insecurity exists despite continuous arms control negotiations since World War II. Chapter II discusses international military expenditures and the spread of nuclear weapons. Chapter III stresses the need for improvements in international security to counteract increasing danger of war, escalating arms competition, and military pressure for armaments. Chapter IV suggests that citizens in all countries participate in movements for social change. Chapter V identifies characteristics of an ideal international security system. Chapter VI, the bulk of the document, presents a five phase strategy for system change: (1) education of the public; (2) reduction of military expenditures; (3) reduction of level of nuclear weapons; (4) dismanteling of nuclear weapons and further reduction of military budgets; and (5) authorization of a global security organization and prohibition of production and possession of military equipment. Chapter VII details arguments against disarmament and international cooperation. The final chapter summarizes information presented in the booklet. (Author/DB)