National Security Adviser James Jones Stepping Down

Gen. James Jones is resigning as President Barack Obama's national security adviser, to take effect in two weeks, say two senior administration officials. Jones will be replaced by Tom Donilon, the deputy national security adviser, say the officials, who spoke on condition of anonymity because the decision had not yet been made public.

Obama will announce the change this afternoon in a Rose Garden ceremony with Jones and Donilon. The officials said Jones had planned from the start of his tenure to leave the position at about the two-year mark. (More James Jones stories.)