is a sign of desperation on the part of the remaining dead-enders in Iraq. The Syrian, Saudi and Palestinian guerillas, the assorted terrorists still in the country, fear a democratic Iraqi government so much they'll try to stop it any way they can. They can't create, so they'll destroy the works of others out of sheer spite.
I think this was another self-inflicted wound on their part, however. Is this likely to change any part of the transition to self-rule? Not likely. Will it cause Iraqis to resent other Arab nations and factions fighting a proxy war on their soil? I hope so. Will this be spun by the media as anything less than "more retaliation for Abu Ghraib?" Of course not.