I suppose I should explain a bit that his demand seems to infer Iraqi Sunni whom members of the Shia led government assess to be terrorist. Not the few ISIS who have been captured, but people such as Leader of the Sunni Tribes of Anbar Province Ali Hatam al-Suleiman, who fled to avoid arrest
Some didn’t have a chance to flee. The Shiite oppression didn’t create ISIS, but it certainly did a share in helping recruitment.
The Iraqi regime will crumble, whether the Iranian mullahs really want to risk invading Iraq probably depends on how screwed up things get.