Gregory M. Reichberg

Research Professor

Gregory M. Reichberg
Work phone: +47 22 54 77 53
Mobile phone: +47 40 28 62 22

Research Interests

Issues at the intersection of peace, war, philosophy and religion.  


​Gregory M. Reichberg is Research Professor at the Peace Research Institute Oslo (PRIO) and Adjunct Professor in the Department of Political Science at the University of Oslo. He heads the Oslo-based Research School on Peace and Conflict (a consortium that offers doctoral courses) and is an associate editor of the Journal of Military Ethics.  From 2009-2012 he was director of the PRIO Cyprus Centre in Nicosia, where he coordinated research and dialogue activities on the search for a political settlement to the island’s division. Over the last ten years he has been engaged in religious dialogue on social/political issues, most recently in Iraq, where PRIO contributed toward drafting the Erbil Declaration (  

Reichberg's recently published work includes a monograph Thomas Aquinas on War and Peace (Cambridge University Press, 2017), and several co-edited volumes: Religion, War, and Ethics: A Sourcebook of Textual Traditions (Cambridge University Press, 2014); World Religions and Norms of War (United Nations University Press, 2009); and The Ethics of War: Classic and Contemporary Readings (Blackwell Publishing, 2006). His articles/book chapters include: "Historiography of Just War Theory" (in Oxford Handbook of the Ethics of War, 2017), "Jacques Maritain, Christian Theorist of Non-Violence and Just War" (Journal of Military Ethics, forthcoming 2017), "Jacques Maritain, l'Espagne et la guerre sainte" (Revue thomiste, 2015), and "The Morality of Nuclear Deterrence: A Reassessment" (in Nuclear Deterrence: An Ethical Perspective, Caritas in Veritate Foundation Working Papers, 2015).

Reichberg is a a member of the Pontifical Academy of Social Sciences (appointed by Pope Francis in 2016). He has been a faculty member in the philosophy departments at Fordham University and the Catholic University of America.


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