Makes the point that it's impossible to intervene effectively in what are essentially tribal rivalries. It is tempting to see ISIS as a more clear cut example of an enemy that can and should be defeated for the benefit of the region, but you are right to point out the dangers of this.
Have you watched this?
http://www.bbc.co.uk/iplayer/episode/p02gyz6b/adam-curtis-bitter-lake
Makes the point that it's impossible to intervene effectively in what are essentially tribal rivalries. It is tempting to see ISIS as a more clear cut example of an enemy that can and should be defeated for the benefit of the region, but you are right to point out the dangers of this.