The New Thirty Years’ War by Richard N. Haass.
It is a region wracked by religious struggle between competing traditions of the faith. But the conflict is also between militants and moderates, fueled by neighboring rulers seeking to defend their interests and increase their influence. Conflicts take place within and between states; civil wars and proxy wars become impossible to distinguish. Governments often forfeit control to smaller groups – militias and the like – operating within and across borders. The loss of life is devastating, and millions are rendered homeless.
That could be a description of today’s Middle East. In fact, it describes Europe in the first half of the seventeenth century.