The Shitte see this as an opportunity to rid themselves of Kurds, failing to understand the existential threat of ISIS.
I disagree. There are Kurds who are Shia. Their is an economic exchange between Iran and the Kurdish region. As well a Iranian general was recently photographed with the Peshmerga. There are a number of Iranian companies operating in Erbil and over in Sulimaniah. When I lived in Erbil for year we had some regular Barbecue parties. Occasionally a friend would bring an Iranian guest over. It was interesting and motley group of cultures, US, South African, Armenian, Iraqi, Kurdish, Ethiopian, British, Swedish,Turkish,Philippine and Iranian. The Whiskey was Scottish.. And the beer was Dutch
The Iraqi Shiites do as Iran says, and Iran doesn’t want anyone to lift a finger to help the Kurds.