Ignatius, David. "How ISIS Spread in the Middle East And how to stop it". The Atlantic.29 Oct. 2015. Web. 10 Jul. 2016.

Ignatius claims that ISIS is not merely a terrorist group, but it's an anti-colonial organization with higher political motives aiming to restore an "Islamic caliphate" similar to the ottoman empire. And that the US failed foreign policies facilitated their insurgence and empowerment.