Robert Einhorn is a senior adviser in the Center for Strategic and Internationsl Studies International Security Program, where he works on a broad range of nonproliferation, arms control, and other national security issues.
Prior to his current position, Einhorn served in the U.S. government for 29 years. In 2001, Secretary Colin L. Powell presented Einhorn with the Secretary of State’s Distinguished Service Award. Einhorn is a member of the Council on Foreign Relations and the International Institute of Strategic Studies.
Source - CSIS http://www.sgpproject.org/experts/bob_einhorn.html