Killer drones: how many are there and who do they target?

As featured in The Guardian



Pilots on rotation control devices that are able to loiter in a conflict zone for about 16 to 20 hours – and able in theory to hit a target the size of a household pane of glass. Justin Bronk, from military thinktank the Royal United Services Institute, says “drones are five to six times more efficient than conventional air missions”.