The man in charge of the military mission in Afghanistan, Gen. Stanley McChrystal, has said that without more troops, the U.S. mission "will likely result in failure." While no official request for more troops has been made, President Obama has made it clear that he is not wild about the idea, even as he convenes a series of White House strategy sessions to discuss U.S. options in Afghanistan. Today, he meets with his full national security team. Whatever the president decides, he'll need to convince Congress that he's pursuing the right course. We talk with Republican Sen. Saxby Chambliss of Georgia, member of the Senate Armed Services Committee, about U.S. troop levels and strategy in Afghanistan.