Just updated my post earlier today linking to Mickey Kaus's theory that Katrina allows the left "a way to talk about Iraq without talking about Iraq", to also include a flashback to Charles Krauthammer's "Pressure Cooker Theory" essay from August of last year. It's well worth revisiting in light of this past week's ratcheting up of Bush Derangement Syndrome (which of course, was another spot-on Krauthammer coinage).