Not that many. Mohammad is still the pedophile Prophet, and the Koran is still the Koran, and it is basically the exact same when it comes to Jews Christians and the rest of the world.
There fighting over a few Ali verses and control doesn't change any of that.
And there is still a lot of Arab blood in Iran. There were a lot of Persian s at one time, but like everywhere in the ME, during the first Muhammadan conquests, the Arabs interbred everyone's cultural identity out, including their own.
Whether it's Shiites or Sunni fundamentalists, It all spells the same thing to us in the end. The war between them will be a short one, and what emerges from it is what goes on to wage war with the rest of the world. Ironically, Prophesy tells us that this Persian Empires religion will become something fundamentally different, no doubt because of the large part of it is made up of northeastern Asian members
"Different from all the other kingdoms" on the planet, "it will devour the whole earth, trample it underfoot and crush it." (Dn.7:23).
The bible tells us that It's the North (Shiite) that pervails, and goes on to crush Europe and Rome, and do serious damage in our neck of the woods as well. All because the will to prevent the rise of this last Persian empire wasn't there at the beginning (now).