Bart M.J. Szewczyk is a non-resident senior fellow with GMF in Brussels focusing on transatlantic relations, NATO, the European Union, Ukraine, Russia, and the United Nations. Between 2014 and 2017, Dr. Szewczyk served as member of Secretary Kerry’s Policy Planning Staff at the U.S. Department of State and from 2016 to 2017, concurrently as senior policy advisor to the U.S. Ambassador to the United Nations Samantha Power. He joined the U.S. government from teaching at Columbia Law School, as one of two academics selected nationwide for the Council on Foreign Relations International Affairs Fellowship. Prior to government, Dr. Szewczyk was an associate research scholar and lecturer-in-Law at Columbia Law School, where he worked on international law and U.S. foreign relations law. Before academia, he practiced international law at WilmerHale for several years, taught international law and international organizations at George Washington University Law School, served as a visiting fellow at the EU Institute for Security Studies, and clerked at the International Court of Justice and the U.S. Court of Appeals for the Third Circuit. 

He holds a PhD from Cambridge where he studied as a Gates Scholar, a JD from Yale Law School, an MPA from Princeton, and a BS in economics (summa cum laude) from Penn. He has published in the Harvard International Law Journal, Columbia Journal of European Law, American Journal of International Law, Cambridge Review of International Affairs, George Washington Law Review, Polish Yearbook of International Law, and elsewhere.