What would be the point? If the pretend that we attacked them, they'd have to respond. If not, and we 'got away with it', then it would show that when the time comes, we really could get away with it.
The sympathy ploy isn't going to work in this case. It would just make them look cynical and crazy.
The global leftist media can make any crazy terrorist look normal. And anyone fighting back look like a bully.
ie, Israel, for the last 30 years.
Your opinion, fine. Mine differs. They would not have to attack us. They could run wailing to the world for propaganda purposes. They really don't want to attack us. They want to win a progaganda and psychological victory against us, while they continue to stall the Euros and build up their nuclear program. So we get an Iran TV report via Reuters that a missle from an unknown plain was fired in the desert in an unpopulated area near a nuclear facility? Uhhuh... It might be for real, but until proven, I won't assume it.
To inspire wavering Iranian nationalism, like 9/11 did with us. Also it would give them an excuse to stonewall talks on nuke disarmament, distracting with accusations.