It's probably best to not use one Fundamentalist regime that uses a religion to establish a dictatorship in Iran with the Muslim Faith as a whole. I mean, that would be like saying that the KKK or the Spanish Inquisition represent all Christians.
I would say 99.9% of all Christians, even very hard core right-wing half crazy Christians like Jerry Fallwell would not aspire to the kkk belief system. I don't think you can say that for Muslems. There are probably 20-30% world wide with very extremists beliefs including leaders of nations.