Industry
- Special Counsel to the President of the United States, 2021-2022
- Special Envoy for Guantanámo Closure, 2015-2017
- Director for Transnational Threats, National Security Council, The White House, 2000-2001
-
Council on Foreign Relations
Life Member -
National Security Initiative
Director -
National Center for Law and Economic Justice
Director - Tufts University Institute for Global Leadership Advisory Board