The Saudis dread the Persians as do all the little oil emirates. No one wants to die for Palestine, or even be inconvenienced for it. They don’t mind writing a check to the terrorists, but they don’t want a real fight.
Some Persians have delusions of a re-emergence of the Persian Empire and this scares the bejeebers out of Arabs. The Arabs would be wise not to “encourage” the Ottoman, either.
I think you’re quite right about the Sheikdoms & S. Arabia.
Personally, if there was a ‘regime change’ in Iran, I’d be in favour of sending the whole lot of them mullahs & their supporters back to Arablands, particularly S. Arabia. So that they could be close to their beloved Mecca. They share the same ideology, love worshipping an Arab prophet, his book & his ways. Shi’ism is just a technicality - they can then sort things out w/ their moslem brothers & sisters. Currently, they are using a state-nation (Iran) to achieve their goals.