Audrey Kurth Cronin has produced a work that is both insightful and frustrating—but it is frustrating for all the right reasons. Readers searching for definitive answers for the end of terrorism will be disappointed. So, too, will critics expecting a presentation of how "simple" it is to end terrorism. What readers will find is a book written conditionally and with much argument by counterfact, but active readers will find a rich source for debate. More critically, it is the right debate to have regarding terrorism and its threat today: namely, how will it end? One of the most effective themes throughout the book is that despite all of the contemporary hyperbole, historical experience shows that terrorist movements generally do not last long, and at some point in time, practically all of them come to an end. How that end is achieved—whether it is done by or at the expense of the state—and what lessons states today can take from past experiences are the major themes of this book.