If we have a phased redeployment where we're as careful getting out as we were careless getting in, then there's not reason why we shouldn't be able to prevent the wholesale slaughter I think some people have suggested might occur.
Here at home, we will strengthen our defenses but not succumb to a siege mentality that sacrifices the open society and liberties and values that we cherish as Americans, because great and proud nations don't hunker down and hide behind walls of suspicion and mistrust.