Frederick- It is the Arab peoples failure to take responsibility for themselves  that is at the root of the problem. It is their inability to understand democratic norms and simple tolerance. Nothing that any outside power did prevented Arab states from forming decent forward looking governments upon independence as most former western possessions have. (The US was once a colony) The violence being visited upon the Arab people of Iraq is from your fellow Arabs. Da'esh is of your own creation.  The collapse of the  "Arab Spring " most fully demonstrates the Arab peoples inability to deal with their own issues in a positive way. I don't think it is purely a problem with Islam- it it a problem with the worst in the culture somehow reinforcing the worst in the religion resulting in some horrible death spiral that make your nations unlivable.