He knew it was coming. There's no way Bush would be able to avoid being pressured by a Democrat controlled Congress to dump him. He gets to say he left of his own accord this way, instead of being fired.

What amazes me is that it took this long as it is. Rummy fucked Viet Nam, he's fucked Iraq, and hopefully we'll be able to come up with a better strategy to get the job done and get our troops home rather than that stupid "Stay the course" crap that's been forced down our throats this long.