Invading Iraq started ISIS. Noam Chomsky explains

http://www.alternet.org/books/chomsky-us-spawned-fundamentalist-frankenstein-mideast?akid=12333.294211.cBwNTR&rd=1&src=newsletter1022149&t=13

One of the most respected mainstream US Middle East analysts, former CIA operative Graham Fuller, recently wrote that "I think the United States is one of the key creators of [ISIS]. The United States did not plan the formation of ISIS, but its destructive interventions in the Middle East and the war in Iraq were the basic causes of the birth of ISIS."
He is correct, I think. The situation is a disaster for the US, but is a natural result of its invasion. One of the grim consequences of US-UK aggression was to inflame sectarian conflicts that are now tearing Iraq to shreds, and have spread over the whole region, with awful consequences.
ISIS seems to represent a new jihadist movement, with greater inherent tendencies toward barbarity in the pursuit of its mission to re-establish an Islamic caliphate, yet apparently more able to recruit young radical Muslims from the heart of Europe, and even as far as Australia, than al-Qaeda itself. In your view, why has religious fanaticism become the driving force behind so many Muslim movements around the world?