The question isn't "Is Iran Supporting the Iraq Insurgency?" It's the kind of crap they would do, and Econo-Girl has no information to say they aren't. The question is "Why is the U.S. advertising this?"
The U.S. could be setting the stage for a real confrontation with Iran to let them know their rhetoric against Israel needs to calm down a few notches. Reminding them of what a real problem could look like in the headlines of the world's leading newspapers is a great way to get it across.
Or maybe the Administration has been planning a war with Iran all along. All the intelligence agencies agree, and that's suspicious right off the bat. The logic expressed in the New York Times article is something like "We were wrong before and we admit that. So you got to believe us now." OK, so you finally admitted the obvious when it was impossible to do anything else. That doesn't give you credibility.
One thing is certain: a lot of this bandying of headlines could stop if we would just have some kind of dialog with Iran directly. Remember, you don't have to be able to look into someone's eyes and declare you can do business with this man, to do business with this man. You just need to get over yourself.
See "Deadliest Bomb in Iraq Is Made by Iran, U.S. Says " today in the New York Times.