It's the third and final faceoff -- at Lynn University in Boca Raton, Fla. --between President Barack Obama and Mitt Romney, former governor of Massachusetts, for the nation's top job. U.S. foreign policy, the focus of tonight's debate, could very well give either candidate much-need yardage ahead of his competitor in what polls are calling a virtual dead heat. But do the candidates really differ on the aims and objectives of U.S. foreign policy?  I call it like I see it -- as does Michael Scheuer, author and former head of the CIA's bin Laden unit.