![The Mystery of ISIS](https://www.nybooks.com/wp-content/uploads/2015/07/anonymous_1-081315.jpg?w=162)
The Mystery of ISIS
None of our analysts, diplomats, politicians, or journalists has yet produced an explanation for it
ISIS: Inside the Army of Terror
by Michael Weiss and Hassan Hassan
ISIS: The State of Terror
by Jessica Stern and J.M. Berger
August 13, 2015 issue