Hold on a minute! The Maliki government, which acted in a totally sectarian way and virtually expelled all Sunnis from government, was the US's puppet regime. That means the US is responsible. To use this as an argument that these so-called barbarians are 'not ready for democracy' is nonsense.
I heard a representative of the Sunni tribes in Iraq interviewed on the BBC's Today radio news programme a week or so ago, and he was saying exactly the same thing. Give us a deal which reincludes us in Iraqi politics and we will get rid of IS ourselves. The solution is there staring us in the face, if the real aim is to get rid of IS.