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,
your right i keep on getting the robe wearing terrorists mixed up with the suit and tie terrorists.