Your prediction was a war between nuclear armed nations, bruce. I can't see a likely scenario for that (aside from the always present risk of a cock up in the Great Deterrent, which always exists, though it's probably a lot less than it has been for much of our life).

An assault by a nuclear armed nation on one without nuclear weapons, using some of those nuclear weapons is of course always a possibility. But I can't see a scenario in which the chances of that are greater with Obama in the White House than McCain.