From Foreign Affairs, who watches the drones? Omar S. Bashir on the case for independent oversight. Shane Harris on the brave new battlefield: With the rise of drones, human beings may no longer be essential to the conduct of war. Is the marginal cost of a drone strike too low? Erik Voeten investigates. Gabriella Blum on technology and the future of violence: How should our defense strategy evolve in a world of easily accessible mini-drones, lethal nanobots, and DIY warfare? Glenn Greenwald on how new research shows the terrorizing impact of drones in Pakistan, false statements from US officials, and how it increases the terror threat. Targeted killing, pro and con: Joshua Foust on what to make of U.S. drone strikes in Pakistan. An interview with Hugh Gusterson on the legal, political, and cultural implications of drone warfare and targeted killing. What's not wrong with drones? Rosa Brooks on the wildly overblown case against remote-controlled war. Are “moral robots” the future of war or dystopian fiction? Don Troop on how some resist the hypothesis that using machines with an "artificial conscience" would result in fewer civilian deaths.