I should've known this was going to be one of those stories about "patriots" staging an enemy attack to fire up passions against the enemy or bring the country together or whatever. How many times has that been the basis for a story? There's probably a TV Tropes entry for it. (Yup, kind of -- it appears to be a subset of False Flag Operation
The only thing missing from the 24 playbook would be if it turned out the domestic terrorists and Middle Eastern terrorists were in on the plot together... and Adrian Pasdar was the mastermind... and the nuke was a diversion for something bigger.