'The First World War is a dominant event for subfields in both history and political science. This interdisciplinary revisiting of the causes of the conflict focuses on several enduring and important questions, including the impact of situational and dispositional factors, whether Germany or other states bear primary responsibility, and why the war began in 1914. These serious, scholarly, and timely essays are a valuable addition to multiple research traditions, including international relations theory, security studies, and diplomatic history.' Colin Elman, Maxwell School of Syracuse University