Gregory M. Reichberg is Research Professor at the Peace Research Institute Oslo (PRIO). He has coedited several volumes, including Religion, War and Ethics: A Sourcebook of Textual Traditions (Cambridge, 2014), and Ethics of War: Classical and Contemporary Readings (2006). His recent publications include 'The Decision to Use Military Force in Classical Just War Thinking' in the Ashgate Research Companion on Military Ethics (2015), 'Historiography of Just War Theory' in the Oxford Handbook of War and Ethics (2016), and 'Jacques Maritain, Christian Just War Theorist' in the Journal of Military Ethics (2016).