Eric Rosenbach is the Executive Director for Research at the Belfer Center for Science and International Affairs. Prior to his work there, Mr. Rosenbach was a staff member on the Senate Select Committee on Intelligence and served as the National Security Advisor for U.S. Senator Chuck Hagel. He led and authored two formal Senate Intelligence Committee investigations of prewar intelligence on Iraq, entitled Postwar Findings about Iraq's Links to Terrorism and Prewar Intelligence about Postwar Iraq. In the private sector, Mr. Rosenbach previously worked as Vice-President and Chief Security Officer for the largest internet service provider in Europe. He also served as an active-duty military intelligence officer supporting post-conflict operations in the Balkans. Mr. Rosenbach co-authored a book on counterterrorism policy with Richard A. Clarke and has published several other pieces on national security issues.