thinking outside the box here, wonder what would happen if the Sunni and Kurdish areas of Iraq were to vote for partition and then voted to be combined with Jordan? Think that'd short circuit Iran's plans for Iraq's oil fields?
I dont think a rump ShiaIraqistan would allow Iran in, in any event. Theyd be primarily Arab and 10 million strong. They'd probably hook up with some Western ally ( the US probably)which would safeguard their borders. After all, Sadr and his followers are not even a majority in Shia/Iraq, and I doubt he'd vote to allow Persians run the show after all is said and done.
Besides, why would Iraq Kurdland join with Arab Jordan? Never happen.