Georg Nolte is a law professor at Humboldt University Berlin. He teaches international law, German and comparative constitutional law, and European law. His research interests focus on general questions of international law at the intersection of political science. As a member of the International Law Commission of the United Nations, he combines theory and practice. His recent publications include ‘The Charter of the United Nations: A Commentary’, Oxford 2012, (co.-ed. with Bruno Simma, Daniel-Erasmus Khan und Andreas Paulus). Georg Nolte earned his doctorate and his “Habilitation” at the University of Heidelberg. Before going to Berlin he was the professor at the Universities of Munich and Göttingen, a Visiting Fellow at All Souls College, Oxford, and at the Wissenschaftskollegzu Berlin (Centre for Advanced Studies, Berlin), as well as Visiting Professor at Université Paris II – Panthéon-Assas). From 2000-2007 he was a member of the European Commission for Democracy through Law of the Council of Europe (‘Venice Commission’). At Princeton, he will be working on the informal development of treaties and their interpretation through the subsequent practice of their parties.