Iran will never allow the Kurds to have an autonomous state, ever. What makes things worse is that any territory of Iraq controlled by Iran gives Iran a direct connection to the Mediterranean.
I don't think that will stop the KURDS from trying.
This will aggravate the hell out of neighboring Sunni Turkey, and might cut the KURDS some slack with Shiite Iran.-Tom
Iran will snap up Sumer in south Iraq—(Basra as her capital—it will be a client state of the Mullahs. The Kurds will get their state and IS (or a sunni state) will take and rule (or mis-rule) the middle.