In an interview with NBC's Brian Williams, CIA head Leon Panetta -- who is President Obama's choice to replace Defense Secretary Robert Gates -- said there's no question that the world is safer without Osama bin Laden.
"But Panetta added, "I also don't think we ought to kid ourselves that killing Osama bin Laden kills al Qaeda. Al Qaeda still remains a threat."
BRIAN WILLIAMS: Is the world safer?
LEON PANETTA: Brian, I don't think there's any question that, you know, when you get the number one terrorist in the world that we're a little safer today than we were when he was alive. But I also don't think we ought to kid ourselves that killing Osama bin Laden kills al Qaeda. Al Qaeda still remains a threat. They're still going to try to attack our country. And I think we have to continue to be vigilant and continue the effort to ultimately defeat these guys. We've damaged them, but we still have to defeat them.