Candidate, United States House of Representatives, New York, District 17, 2020

No caucus information on file.

Senior Fellow, German Marshall Fund/NBC National Security Analyst, 2016-2019

Senior Advisor to Supreme Allied Commander, Europe and Commander, U.S. European Command/Special Assistant to the Secretary of Defense to the NATO Summit (Sherpa)/Deputy Assistant Secretary of Defense for Russia/Ukraine/Eurasia/W. Balkans/Conv. Arms Cntl), Department of Defense, 2010-2015

Senior Fellow, American Security Project, 2009-2010

Executive Director, Commission on the Prevention of WMD Proliferation and Terrorism, 2008-2009

Professional Staff Member, Armed Services Committee, United States Senate, 2001-2008

Deputy Director, Defense Task Force, Kerry Campaign, 2004

Associate Professor of International Relations, United States Marine Corps Command and Staff College, 1997-2001

Human Rights Officer, Organization for Security and Co-operation in Europe (OSCE), 1996

Rosenthal Fellow, Foreign Affairs Committee, United States House of Representatives, 1993

Assistant to the Director, International Institute for Applied Systems Analysis (IIASA), 1990-1993

Staff Assistant/Associate, Council on Foreign Affairs, 1989-1990

Trustee, Board of Trustees, Franklin & Marshall College, 2017-present

Member, The Atlantic Council, 2013-present

Member, Asia 21 Young Leaders, Asia Society, 2009-present

Member, Asia 21 Young Leaders, Asia Society, 2009-present

Advisory Board Member, Socrates Society, The Aspen Institute, 2004-present

Advisory Board Member, Rosenthal Foundation, 2000-present