I’m no conservative, but The American Conservative nailed it:
Nobody wants to recall what Americans believed back then. That’s OK: I’ll remember it. People thought that Saddam was “connected to” 9/11, and his agents were going to poison our water, nuke our cities, and gas our subways. At least they claimed to believe all that unlikely James Bond stuff. I don’t think they really did. There was just so much revenge momentum after 9/11 that it had to burst out somewhere. Everybody wanted payback. It’s natural. But most of the time, in your average democracy, cooler heads are in charge. Not this time. Bush and his team were foaming at the mouth far more than the average citizen. It was like a crazed sheriff trying to talk a lukewarm mob into a lynching frenzy. With the help of people who should have known better—I’m looking at you, Colin Powell—he got his way.