Helmut Philipp Aust, Dr. iur., is a Senior Research Fellow at Humboldt University Berlin. He was previously a Research Fellow at the University of Munich as well as a Visiting Fellow at the Lauterpacht Centre of International Law at the University of Cambridge and a Visiting Scholar at Melbourne Law School. He is the author of "Complicity and the Law of State Responsibility " (CUP, 2011) and co-editor (with Bardo Fassbender) of "Basistexte: Völkerrechtsdenken " (Nomos/UTB, 2012). Apart from his expertise in the fields of state responsibility and treaty interpretation, his work is currently focusing on the growing role of cities as international actors.
Georg Nolte, Dr. iur., is Professor of International Law at Humboldt University Berlin, and a member of the United Nations International Law Commission. He was previously Professor of Law at the Universities of Göttingen and Munich as held visiting positions at All Souls College, Oxford, Université Paris II, Wissenschaftskolleg zu Berlin, as well as at Princeton University. His most recent publications include "The Charter of the United Nations - A Commentary " (co-editor, 3rd ed., OUP, 2012) and "Treaties and Subsequent Practice " (editor, OUP, 2013). He is Speaker of the interdisciplinary research project "The International Rule of Law - Rise or Decline? " at Humboldt University.