I am interested in a range of issues at the intersection of international relations and political philosophy, such as the responsibility to protect (R2P), mass atrocity prevention, just war theory, human rights, and global justice. I am a universitair docent (assistant professor) in international relations at Leiden University where I teach in the MAIR program. I am additionally a senior researcher at The Hague Institute for Global Justice. In 2011, I received a Ph.D. in political science from the University of Colorado at Boulder, where I was given the Thomas Jefferson Award. Articles of mine appear in Ethical Theory and Moral Practice, Ethics & International Affairs, Global Constitutionalism, Global Society, and International Theory. My work has received support from The Netherlands Organization for Scientific Research (NWO), George Washington University, and elsewhere. I am additionally affiliated with the European Center for the Responsibility to Protect, the Global Governance Institute, and the Canadian Center for the Responsibility to Protect. I have enjoyed teaching courses on human rights, political theory, international relations, comparative politics, and environmental politics.