This article is a good discussion of the work that went into pacifying amd unifying Europe and North America over the last century. It’s important to remember that it wasn’t all that long ago that we were not aligned in our goals and motivations. It’s taken decades to get where we are.
This same sort of pacification and unification of goals still needs time for the West to align with the Middle East, Africa, South America, and maybe even Asia. The greatest tools have been shared markets and peace treaties.
If we want to ultimately resolve the issue with terrorism or security in general we’re going to have to give the markets time to work their magic on developing economies. Prosperity is the greatest tool for widespread security.
The Decline of the West, and How to Stop It http://nyti.ms/2egn38N