Drone warfare, as global activist Medea Benjamin persuasively explains in her new book on the subject, is a quantum leap in military affairs. It has reshaped the day-to-day waging of war in ways more profound even than the last great technological leap in warfighting, nuclear weapons. The use of unmanned aerial vehicles has transformed not only the techniques of war but also the ethical, political, and psychological context of war. And it has done so largely by stealth. Drones have snuck up on us, and we’ve barely had a chance to discuss their implications.