Pauline Kleingeld is professor of philosophy, Leiden University, The Netherlands. David L. Colclasure is assistant professor and head of the German Studies Program at the Monterey Institute of International Studies. Michael W. Doyle is Harold Brown Professor at Columbia University in the School of International and Public Affairs and Columbia Law School. Jeremy Waldron is University Professor and director of the Center for Law and Philosophy, Columbia University. Allen W. Wood is Ward W. and Priscilla B. Woods Professor at Stanford University.