"Not thinking terrorism."
Well, I'm not going to automatically assume that it is, but I'm also not going to automatically assume that it isn't. Not enough information out there yet, and the public pronouncements from government officials tend to seal my impression ... an automatic dismissal of terrorism from "authorities" usually gets my radar up. A workmanlike attempt at explaining what happened, with no effort to fix a single cause is less suspect, in my mind.
Didn't Zarqawi just urge his minions to attack oil assets?