Tom Donilon, who succeeds Jim Jones as national security adviser, is talented at politics and managing. But his skills as a policy strategist will be sorely tested in the months ahead.
President Barack Obama , followed by outgoing National Security Adviser James Jones, center, and his replacement, Tom Donilon, walk from the Rose Garden back to the Oval Office of the White House in Washington, Friday, Oct. 8, 2010. (Charles Dharapak / AP
