We have seen Arab self rule

AMMAN: Arab inhabitants of Syria’s Deir Ezzor began a third week of protests against Kurdish rule, the largest wave of unrest to sweep the oil-rich region since US-backed forces took over the territory from Daesh nearly 18 months ago, residents, and tribal figures said.

It ain't pretty.  I kind of like the Kurds, but they helped the Turks against the Armenians.  (And Armenians got some revenge). And so on and so on.

No one in that region will like Shia rule.  You tell me, invasions of the ice people seem to mess it up just as bad. Egypt, a  hopeless swamp. And everything seems to be tribal. Where are the Persians when you need them, good old fashioned zoroastrians.   Iranians are shell shocked Persians, the fake mohummerdudes.