Tehran is quite busy dealing with threats on all sides, whilst still trying to pursue its support of Hezbollah in Lebannon. I think lessons learned in Iraq cha

Tehran is quite busy dealing with threats on all sides, whilst still trying to pursue its support of Hezbollah in Lebannon. I think lessons learned in Iraq changed the calculus for Tehran and Washington. Keeping in mind there are at least 18m Sunni muslims in Iran vulnerable to ISIS message and good number of disaffected Shia, the focus may be on stability now.