Sometimes you just have to lance the abscess to cure the problem. Long term the Persians are brighter, more capable people than Sunni Arabs. Look at Bin Salman's heavy handed idiocy.https://twitter.com/Imperius__13/status/941492004374147072 …
For most of history the Middle East has been dominated by empires from Anatolia, Egypt, or Iran. The US can't change that. Their Sunni Arab alliance will just be a liability that like Iraq will cost far more than it's worth.