Jeff McMahan is Professor of Philosophy at Rutgers University, a Visiting Research Collaborator at the Center for Human Values at Princeton, and a Research Fellow of the Uehiro Centre for Practical Ethics at Oxford.  He is the author of The Ethics of Killing: Problems at the Margins of Life (Oxford, 2002) and Killing in War (Oxford, 2009), and has several other books forthcoming from Oxford University Press, including The Values of Lives and The Right Way to Fight.