Bush-like, in a good way

One of Andrew Sullivan's readers writes:

Hillary's hanging on to the contest dramatically proves to me that she is unfit to be our president. It is so Bush-like, is it not? It's her Iraq. She has obviously failed, yet she keeps on just to prove she's not a quitter.

Bush's refusal to give up in Iraq, despite enormous pressure to do so, is one of the bright spots of his presidency. (Taking as long as he did to change the strategy there is another matter.) Would the U.S. or Iraq really be better off had there been a U.S. pull-out before Gen. Petraeus made headway against the chaos? Criticism such as the quote above is significantly better than praise.