Thomas E. Donilon Biography

Thomas E. "Tom" Donilon (born May 14, 1955) is an American lawyer and former government official who served as National Security Advisor in the Obama administration. Previously, he served together with diplomat Wendy Sherman as Agency Review Team Lead for the State Department in the Obama transition, and as Deputy to National Security Advisor James Jones early in the Obama administration. Donilon replaced Jones as National Security Advisor on October 8, 2010.