Kai Ambos is Professor of Criminal Law, Criminal Procedure, Comparative Law, International Criminal Law and Public International Law at the Georg August Universität Göttingen and Judge at the Kosovo Specialist Chambers. Antony Duff is Professor emeritus of Philosophy at the University of Stirling. Alexander Heinze is acting Professor of Criminal Law, Criminal Procedure, International and European Criminal Law, and Comparative Law, at the University of Bremen. Julian Roberts is Professor emeritus of Criminology at the University of Oxford. Thomas Weigend is retired Professor of Criminal Law, University of Köln.