None of them are to be trusted. “Reformers” are dead or in jail. Those left are now puppets of the ayatollahs.
Pragmatic conservatives - those who know we will blow the hell out of them if they start something.
The rest are lunatics with nuclear ambitions. The only thing they are fighting about is how to bring about nuclear attacks on the West and not get caught.
I recently had a taxi driver from Iran who was able to leave as a religious refugee. Anyway I asked about who is really in charge in Iran. He said it’s the Ayatollahs and not the president. He is just their puppet/mouthpiece. So “reining in the president” can’t happen other than as a charade.