Prof. Enzo Cannizzaro is Professor of International Law and European Union Law at the University of Rome "La Sapienza", Italy. Prof. Paolo Palchetti is Associate Professor of International Law at the Faculty of Law of the University of Macerata, Italy. Prof. Ramses A. Wessel is Professor of the Law of the European Union and other International Organizations at the Centre for European Studies of the University of Twente, The Netherlands.