Meghan L. O'Sullivan is a lecturer in public policy at Harvard Kennedy School's Belfer Center for Science and International Affairs. From July 2004 to September 2007, she was special assistant to President George W. Bush and served as deputy national security advisor for Iraq and Afghanistan during part of that tenure. She spent more than two years in Iraq, most recently in fall 2008 at the request of Ambassador Ryan Crocker and General Raymond Odierno, to help conclude the security agreement and strategic framework agreement between the United States and Iraq.