Ancient Persia is the only surviving civilisation in the region. Interestingly, it is also the originating culture of the Moghals who created the most powerful of Indian empires before the Eat India Company arrived. I say this as Iran and Pakistan [the military muscle of the Islamic world] share this history and have finally come to an understanding [of sorts]. The other significant power, Turkey, is also getting closer to Iran as the former's paranoia of the Kurds runs very deep. However, none of these three countries wish to become directly involved and rightly surmise [in my view] that a US-led Western coalition will soon enough bring ISIS to heel. As I have already said, Russia will play ball in exchange for its Mediterranean naval base.
Of course, the elephant in the room is an Israel that has always benefited from conflict in the area [by receiving more support from the US]. The Zionists will never agree to Iranian involvement, of course. However, they may now find themselves side-stepped by the West as the current dangers to Europe are clear for all to see.