Situated within the recent reassessment of the relation between religion and international politics, this module is designed to investigate the theological dimension in international politics via an examination of Christian Realism and the Augustinian tradition in IR. More concretely, the module revisits important theological moments in international political theory as exemplified in the work of Reinhold Niebuhr, Herbert Butterfield, Martin Wight and Jean Bethke-Elshtain, and assesses the political theologies informing their thought on international politics and the use of force, with particular references to the Second World War the Cold War, and the War on Terror. Finally, the module critically evaluates the recent revamping of political theology in international relations, the role of faith and religious ideas in global politics and the implications of recasting International Relations as a theo-political discourse.