I can’t claim to know his personal intentions, but my impression of him through his public persona is that he has (or at least had) a deluded view of the world. Given his upbringing, lifestyle, success, and the people he surrounded himself with during his presidency, this hardly seems surprising. And I think it’s likely that he really thought his actions as president were the morally right things to do, just as Don Quixote constructs moral justifications for everything from freeing the galley slaves to slaughtering the hotel wineskins. And Don Quixote too is quick to anger, unrepentant of his mistakes, certain of his understanding of right and wrong, and not convinced by reason.
(I recently saw [the first half of] Longford and read Lord Longford's Wikipedia entry, and he seems like another Don Quixote candidate. I haven't done enough research to make a good case, but what I've seen so far is quite interesting.)