Christian realism is undergoing a renaissance in both American Christianity and around the world. Caught between globalist liberalism, on the one hand, and pragmatic realism on the other, Christians are in search of international ethics, a standard and tradition in foreign policy, that takes the two great books of life, the Christian Scriptures and the world we live in, seriously. This book is an extended, edited collection that mines the tradition of Christian realism in international relations and finds in it voices and mentors urgently fresh for a new age. With classic authors like Reinhold Niebuhr, Herbert Butterfield, Paul Ramsey, and Jean Bethke Elshtain, and contemporaries like Marc LiVecche, Rebecca Heinrichs, and others, this collection offers for the first time an organization, periodization, and collection of primary Christian realist sources for the initiate and the expert in foreign relations.