If (the West) shows its rigidity by making unjust decisions and putting their threats into practice, the Iranian people will not be the only ones to pay the price.
I believe the main solution is to gain the trust of Europe and America and to remove their concerns over the peaceful nature of our nuclear industry and to assure them that there will never be a diversion to military use.
When al-Qaeda was on the run from Afghanistan crossing through Iran, some were arrested and they are imprisoned. Some of them are charged with some actions in Iran.