The key word here is confidence and with the confidence level Iran has vis-à-vis the West, it is not at all an improbable thought that the theocratic regime might develop nuclear weapons. The Iranians themselves have time and time again shown through policies that they are deeply sceptical to the West and the natural consequence of this is of course to develop the ultimate weapon in order to feel more secure.  The paranoia seems to have increased especially after the hardliners took over the presidency, and the negative rethoric escalated.  

If the Iranians are serious about their civil nuclear program it would only be perceived as a confidence builder to let the enrichment process be done by outsiders.  After all the escalation of this matter are partly at the hands of the Iranian hardliners, spearheaded by the President.  By outsourcing the enrichment process they would also neutralize the criticism coming from Washington and secure their program from further delays by splitting the unity between Europe, the US and, now lately what could be, Russia.  

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