Andre Nollkaemper is Professor of Public International Law and Dean of the Faculty of Law at the University of Amsterdam. He is a member of the Institut de Droit International and former President of the European Society of International Law. From 2010-2020 he was the external Legal Advisor to the Minister of Foreign Affairs of the Netherlands. His academic work has focused on international environmental law, the interactions between international law and domestic law (he is Editor-in-Chief of International Law in Domestic Courts and published National Courts and the International Rule of Law, OUP 2011), and the law of international responsibility. On the latter topic, he directed a research project on shared responsibility in international law, culminating in the "Guiding Principles on Shared Responsibility in International Law" (EJIL 2020).