There are other people there that can deal with radical Sunni muslims (ISIS). You don't want (Shia) Iran to deal with them. Look at their recent militia activi

There are other people there that can deal with radical Sunni muslims (ISIS). You don't want (Shia) Iran to deal with them. Look at their recent militia activities, check what happens to Sunni civilians in Iraq. I guess we're not mentioning Yemen.