The transition to robotic warfare scares me a lot. Soon, war will *only* kill civilians. Making war cheap for the aggressor can't be good. Most troublesome of all is the obvious problem that I rarely see discussed: computers, software and people being what they are, it's inevitable that drone command and control will be compromised by enemy agents. It will be very exciting when the US army turns around and flies back to flatten Washington, and no-one has any idea who did it. People think drones accentuate US military superiority, but it's not true; they neutralize it. This is going to be a tragic example of common sense being trumped by overconfidence and dazzling technology.