Obama in Afghanistan, sees 'light of a new day"

BAGRAM AIR FIELD, Afghanistan - On a swift, secretive trip to the war zone, President Barack Obama declared Tuesday night that after years of sacrifice the U.S. combat role in Afghanistan is winding down just as it has already ended in Iraq. "We can see the light of a new day on the horizon," he said on the anniversary of Osama bin Laden's death.

"Our goal is to destroy al-Qaida, and we are on a path to do exactly that," Obama said in an unusual speech to America broadcast from an air base halfway around the world.

He spoke after signing an agreement with Afghan President Hamid Karzai setting post-war promises and expectations. With two armored troop carriers as a backdrop, Obama made his remarks in the midst of his endeavor to win re-election as U.S. president and commander in chief.