Yes, what we are seeing is a great rift within Islam. On one side the Sunni and on the other the Shiite. This conflict is currently the main reason there is a very hot Civil War in Syria that is bringing in the world’s great powers. Many rumors have floated for years that the Saudis already have nuclear weapons - purchased from Sunni majority Pakistan. The external meddling will ensure the war will expand perhaps beyond the Islamic world.
Don’t forget that not all Sunni are of the backward Wahhabi variety. Certainly the ISIL folk are killing plenty of Sunni as well as non Sunni Muslims. There are Druse, Alawite, Sufi, Kurds and others who are not Wahhabists. We must insist that Saudis quite financing those Wahhabist schools that are training grounds for terrorists.