A look back at the the horrifying battle against Islamic State

As long as the Shia are viewed as Apostates, the Sunni will have no choice but to subdue and destroy them.
It is a command from their perfect man. It is the will of the one true god of the Kaaba.
Islam will cause chaos everywhere it goes. See Europe, the ME, Africa and Dearborn, MI.

It is their factions of religion which will not allow them to get along. Kinda like the Balkans. Then again we come back to that little word "RESPECT" which they have not for each other's ways and beliefs.

Not until their religious leaders stops calling for the killing of the other sect. So far, there is none of that on the horizon. They kill far more of each other than just about anyone else.