’This welcome addition to the growing stable of works exploring the role of ethical imperatives in decisions for war deftly weaves theory and history to demonstrate that leaders take rights seriously, even if the rights they take seriously evolve over time, and that rights are crucial signposts of international order. Rarely does one encounter such a cogent and nuanced blend of moral psychology and international relations theory.’ David A. Welch, Balsillie School of International Affairs, Canada ’Showing that conceptions of rights should be associated not only with human morality and entitlements, but also with the practice of war, this historically rich, sociologically sensitive, and methodologically competent book breaks new ground. A must read for everyone interested in the big picture of international relations during the last millennium.’ Emanuel Adler, University of Toronto, Canada 'The book is ambitious in empirical scope, with chapters ranging from the Crusades to the Seven Years’ War and to NATO’s intervention in Kosovo, among others treated at lesser length. Alkopher is successful in showing the usefulness of constructivist insights in interpreting these and other cases.' Perspectives on Politics