The gist of the authors narrative seems to gloss over the obvious basis for the terror attacks - the Muslim faith.  All you need for terror attacks is a threshold number of Muslims in a population. Where they are a minority, the target of choice is Christians and where they are the vast majority, they attack each other. The solution for Western, primarily Christian countries is obvious - keep the number of Muslims entering the country to a minimum and avoid encouraging large communities of Muslims. Sound immigration policy is required which involves ensuring that Muslim immigrants have adequate English/French ability, a skill that is in demand and a background free of problem behaviour. Go ahead and delete/refuse to post my comment.