The devil is in the details. Here's some legitimate drone swarm military applications that wouldn't qualify as WMD: * reconnaissance drone swarms; the drones

The devil is in the details. Here's some legitimate drone swarm military applications that wouldn't qualify as WMD: * reconnaissance drone swarms; the drones can be as small as a hummingbird, but they can also be larger; their "weapon" is their camera. * armed drone swarms aimed for saturation attacks against military naval assets. * armed drone swarms for area denial. Think defense of a large uninhabited border area between Russia and China. If you detect a mass of tanks crossing the border and send a drone swarm to kill everything in that area, the danger of killing non-combatants is nil