I have been thinking the same thing. Why would Iran's General Yahya Rahim Safavi say, "The Americans know better than anyone that their troops in the region and in Iraq are vulnerable. I would advise them not to commit such a strategic error." This tells me that they already have nukes and they have been moved into Iraq across the border by the insurgents. The thing I would be concerned about is the nuclear fallout which would kill people in the entire region.