I happened to be wondering through Iran in early 90s, it was around that time there was a rumour that a certain former soviet state received a large amount of liquidity and that Iran might have obtained some 30 or so nuclear shells and MIRV warheads. Had various conversations with people while there, they were very educated oh and not at all the monsters some people portray them as, though like many other countries certain political elements are less open and there tendency to hang around visitors made such conversations somewhat stilted and short. There were lots of former soviet citizens wondering around Iran while I was there. Just an aside.
Kind regards walker