AP Photo

As the final presidential debate looms into view, there is — or at least I sense there is — a mood of deep trepidation on all sides. That is understandable, of course, because the race is so tight that both candidates have a world to win or to lose this evening. Moreover, the two Libya debacles — the first by President Obama in the conduct of U.S. foreign policy, the second by Governor Romney in the second debate — have raised the stakes even further.