The Iranians would sail one into a U.S. port.
I can think of at least 4 they’d try to hit. 🎯 - you can bet they’ve already gamed in the scenarios.
The detection equipment will sound the alarm too late.
IMHO
“The detection equipment will sound the alarm too late.”
I believe the detection of anything leaving Iran begins at the ports in Iran. We have satellites able to detect radiation as well as track submarines.
That said I really do not believe the Iranians will nuke us or Israel because to do so would mean a total obliteration of their Country. Iranians are not fanatical on a level with Alqaeda, Isis and the like. I don’t believe the Mullahs are looking for their 72 virgins. They want power and control and there will be nothing left for them to control if they decide to go nuclear.