This would require a willingness to send American forces back to Iraq. It would mean not merely conducting U.S. air strikes, but also accompanying those strikes with special operators, and perhaps regular U.S. military units, on the ground. This is the only chance we have to persuade Iraqs Sunni Arabs that they have an alternative to joining up with al Qaeda or being at the mercy of government-backed and Iranian-backed death squads, and that we have not thrown in with the Iranians. It is also the only way to regain influence with the Iraqi government and to stabilize the Iraqi Security Forces on terms that would allow us to demand the demobilization of Shia militias and to move to limit Iranian influence and to create bargaining chips with Iran to insist on the withdrawal of their forces if and when the situation stabilizes.

Translation: If the US goes to war again there will be a pony.