(1) There is no civil war in Iraq and there never has been.
(2) The Gulf States are using Iraq as a way of burning off their homegrown radicals.
Although a full scale civil war is not currently underway, there’s no way to verify where this 70% number derives from.
The once 20% of Sunnis in Iraq was easily the largest group of insurgent forces and even with the number perhaps halved, there is still not enough foreigners to exceed the number of Baathists and crimminals in Iraq one would suspect.
This Iraqi person’s 70% is for poliitical purposes deemed for an international audience. And we are that audience.
The only person who has the credibility to state this publicly would be Gen. Petraeus and most likely he will not do so.
One more thing to add to your list.
3. It’s the same model used against the Soviets in Afghanistan.