We Must Act Soon
Right now, the vast majority of Iranian people are distrusting and skeptical and suspicious of regime's motives and reasons behind going ahead with nuclear projects. Many are afraid of nuclear power in the hands of the mullahs.
The regime knows this and also knows that getting the people behind them is important, as well as the 'show' it will put on for the world when it first produces electricity for its citizens.
But once they begin to actually supply the people with electricity, their facilities will be legitimized and will be defended by the citizens as well as others outside Iran. No one will be able to act after the regime is allowed to 'prove' to the world that they were developing nuclear energy for peaceful purposes.
Something absolutely must be done before then.