There is no denying the battle in Iraq at least is between Saudis and Iranians. Approx. 85% of the muslim world is Sunni (included in that Salafis & Wahabis). The rest are Shia & its offshoots. Iranian regime after 35 yrs has failed to successfully export its version of an Islamic state to the world. IS has taken territory in a matter of months. Is it feasible to play Iranians & co against Saudis & co when it isn’t nearly an even match?
One thing is 'with certainty'... the Muslim Nations have never deviated from their mutual desire of seeing the Caliphate arise.....which will, despite their differences, unite them eventually against what they see as a common enemy to Islam.