Careful studies of al-Qaeda and ISIS have shown that the United States and its allies are following their game plan with some precision. Their goal is to “draw the West as deeply and actively as possible into the quagmire” and “to perpetually engage and enervate the United States and the West in a series of prolonged overseas ventures” in which they will undermine their own societies, expend their resources, and increase the level of violence, setting off the dynamic that Polk reviews.