Guardian: Campaign Against Killer Robots (2013)

Robot warfare and autonomous weapons, the next step from unmanned drones, are already being worked on by scientists and will be available within the decade, said Dr Noel Sharkey, a leading robotics and artificial intelligence expert and professor at Sheffield University. He believes that development of the weapons is taking place in an effectively unregulated environment, with little attention being paid to moral implications and international law.

Killer robots must be stopped, say campaigners

More info:
Human Rights Watch-Report: Losing Humanity - The Case against Killer Robots