President Barack Obama confers with, from left, National Security Council Chief of Staff Denis McDonough, Chief of Staff Rahm Emanuel, and Deputy National Security Advisor Tom Donilon, in the Cabinet Room of the White House, after his address to the nation from the Oval Office on the end of the combat mission in Iraq, Aug. 31, 2010.

President Barack Obama confers with, from left, National Security Council Chief of Staff Denis McDonough, Chief of Staff Rahm Emanuel, and Deputy National Security Advisor Tom Donilon, in the Cabinet Room of the White House, after his address to the nation from the Oval Office on the end of the combat mission in Iraq, Aug. 31, 2010.