Gregory M. Reichberg is Senior Researcher at the International Peace Research Institute, Oslo (PRIO) where he heads the Institute's Program on Ethics, Norms, and Identities. He is editor of The Classics of Western Philosophy: A Reader's Guide (with Jorge J. E. Gracia and Bernard N. Schumacher, Blackwell 2003) and he has published numerous articles on the ethics of war and peace.

Henrik Syse is Senior Researcher associated with PRIO and the Ethics Program at the University of Oslo, and Head of Corporate Governance at Norges Bank Investment Management. He is the author of Natural Law, Religion, and Rights (2006).

Endre Begby is Fulbright Fellow in the Department of Philosophy at the University of Pittsburgh.