The study of religion and international relations has been gathering pace over the past few decades, and has intensified since the start of the new millennium, when the discipline experienced a sudden surge of interest attributable to world events, starting with the Iranian Revolution and culminating with U.S. incursions into Afghanistan and Iraq. 

This four-volume set organizes and contextualizes this burgeoning literature and its contribution to the study of international theory, focusing in particular on its influence in the subfield of war and peace studies. 

The four volumes are arranged thematically, including papers which offer a range of answers to key questions such as:

• How has religion shaped the structure of international system?
• How do we define the relationship between religion and war?
• In what ways has religion prevented, constrained or resolved conflict?
• How do we approach the methodological, ontological and epistemological challenges raised by the interdisciplinary study of religion and international relations?