Since 2001, the landscape of warfare has drastically changed.  Drones, armed non-state actors, and private security firms have become common on the battlefield, and their influence continues to evolve and grow.  While their involvement in the future of warfare is uncertain,  more than likely they will be as commonplace in future conflicts as tanks, airplanes, and submarines are today. In his latest book, Claude Berube offers readers a vivid glimpse of this possible future.