Matan Chorev is the Principal Deputy Director of the Secretary of State’s Policy Planning Staff. Prior to his appointment, he served as Chief of Staff of the National Security and Foreign Policy team on the Biden-Harris Transition and as the foreign policy author of the 2020 Democratic Party Platform. From 2015-2020, he was Chief of Staff of the Carnegie Endowment for International Peace. He previously served as speechwriter and advisor to Deputy Secretary of State William J. Burns and as a member of the Secretary’s Policy Planning Staff. He has also served as a Crisis, Governance, and Stabilization Foreign Service Officer at the United States Agency for International Development with assignments in Morocco and Yemen, and as a Rosenthal Fellow at the Office of the Deputy Assistant Secretary of Defense for Policy Planning. Prior to his government service, Matan was researcher at the Harvard Kennedy School’s Belfer Center for Science and International Affairs, where he was the Executive Director of the Future of National Security Project. He is a David Rockefeller Fellow at The Trilateral Commission and a term member of the Council on Foreign Relations. He holds degrees from Tufts University, New England Conservatory, and The Fletcher School of Law and Diplomacy.