sanctions and corruption are two big barriers to fixing this. doesn't help when sometimes to get a position you just need to know the right people or be able to grow a proper beard. brain-drain is playing an increasingly important role in alleviating the mess. after Hilary Clinton announced the multiple re-entry visas for Iranian students, the numbers applying and being admitted ballooned. I've heard of one engineering department (which is probably not unique, mind you) with an Iranian chair who authorizes admission of Iranians even if the search committees aren't necessarily leaning toward them. Academic institutions have become de facto refugee camps for the "intellectuals" who can then take advantage of the highly-skilled labor laws in effect to obtain permanent residency or even sponsorships for citizenship. Unofficial statistics place Iranians as one of the most educated minority groups in the US in terms of degrees held, at least.
Now with respect to the Iranian regime, its newest proxy state takeover isn't being welcomed with open arms by the locals.
(notice the use of the generic term Gulf, rather than its official name).