"As politically incorrect as it is to say such a thing about a distinguished veteran: McCain is a war mongering nut who has never gotten over the trauma of Vietnam and is itching for a chance to show the world how dangerous America and its Air Force really can be. Put like that such a line probably  would backfire but the fact is this is the truth about McCain and we need to get it out there on the table even if we have to find a more politic way to frame it."

Maybe a more politic way to frame it would be to emphasize the "warmongering nut" part and minimize or leave out entirely the personal and/or psychological motive that drives it. In other words, use McCain's statements (100 years war; bomb, bomb, bomb, bomb, bomb Iran) to show that he is crazy, and crazy in the worst and most dangerous way a President can be crazy, but leave it up to the voters to make the link with either the Rambo "Do we get to win this time?" BS or the PTS syndrome. Going after either one of these latter themes only opens up a whole can of worms, one that our candidate, whoever he or she is, is not in the best position to deal with, never having been in the military or faced anything like what McCain faced in Hanoi. McCain is a warmonger who won't US military involvement in Iraq, will start a war against Iran, and who knows what else. WHY he is a warmonger, and wants to do these things, is not as important, either practically or politcally.