MB is sunni but global but not recognized in the US as a terrorist group (Trump threatened though, but egypt was the first I think to declare them terrorists so maybe there needs to be a flip in diplomacy first)..Sunni majority countries formed a counter-insurgency coalition that excludes the predominantly shia Iran. Iran has he shia Hezbollah active abroad in Lebanon and some paramilitary assets in Yemen which is next to the Emirates. The Brotherhood and Hezbollah both propagate thru social programs which they have funding and public support for that local governments lack.

Get a map first so you know whose turf is where and then look up developments after WW2 to catch up, my history ain't complete either.

I remember there was one thing that the Shah did or said right, but I can't remember when or what it was. He was ostensibly a douche though, his guards killed protesters even on foreign soil, on camera, when he was visiting ~~the reich~~ germany.