Iran has their own self interest to contain ISIS. We could support the Kurds, who don’t have a state and are nowhere close to nuclear weapons and are fighting like heck to push ISIS back. Between the Kurds and the Iranian and the Wahhabis, ISIS would be trapped between Syria, Iraq and Pakistan. They might make a mess in Iraq and problems for Saudi Arabia but these places would also be messy for ISIS especially if they have to watch their flank all the time for Kurds, Jordanians and Shia.
I don’t know why I said Pakistan when I meant Turkey.
Yeah well the Kurds should have had their state 10 years ago. ISIS would never have gone as far as they have with a strong autonomous Kurdish state standing in their way. But alas, we are destined to be ruled by idiots.