Black Flags: The Rise of Isis - Joby Warrick

Black Flags is an incredible look inside the history of ISIS, how it got it's origins and how it grew into the force we know it as today. It uncovers how some mishandling of the conflicts from the past decade and a half gave the group it's boost and shows how, once it got going it proved near impossible to halt. If you want a book to better understand this current threat, this book will not disappoint.