In this groundbreaking volume, leading Catholic theologians, scholar-practitioners, and ethicists take up the challenge of developing a conceptually coherent, theologically accurate, spiritually enlivening, and practically effective approach to Catholic peace-building that can complement the rich Catholic teaching on the ethics of war. The relevance of this book begins with the Catholic community, but it reaches beyond the Church to other religious traditions, to the role of states and international institutions and to the lives of those seeking to build the structures of peace in conflicted communities throughout the world. This much-needed contribution provides a well-developed theology, ethics and spirituality that will serve as a firm foundation for effective peace-building programmes.