"If they had them they would have used them"
You are SO wrong. Timing is everything- even with terrorism. There was no need. Till perhaps now. When their Hezbollah surrogates scream for help and require a bigger threat thn they pose themselves.
so on 9/11 if they had a choice of using planes or nukes, they would still use planes???
remember, we are not dealing with rational people.
Modernize your mental database.
On 9/11 you had the OLD GUARD in charge of Iran, not the neo-Iran Ahmadi-Nejad crowd. He and his gang might have used an atom bomb - had he and Iran been a direct, active part of Al Qaeda at the time and been the planners and executives for the crashing of planes into the Towers.
You are mixing Oranges and Apples inside your thoughts to come to a false conclusion.
Everything you see now exists ONLY since August 15th, 2005. No parameter nor reasoning valid prior to that applies.
cheers,