Britain is developing its own autonomous robotic systems for war: alongside another forty-six countries. Two unmanned aerial vehicles are utilised: the Mantis for surveillance and the Predator for missile attacks. In development are unmanned ground vehicles: Pointer (a tracked single robot), Raider (a reconfigurable vehicle) and Wraith (a stealth tank). The MOD Developments, Doctrines and Concepts Centre is examining the ethics of robots in warfare though the pressures of competition will no doubt overcome their squeamishness.
More detail is provided by an article in The Engineer. The focus on controls, leaving humans in the loop, remains operationally an ethically key. Moving from a single controlled vehicle to swarms of UAVs or UGVs means that the machines are operating with far more autonomy and the debate centres upon rules of engagement, target identification and, presumably, an 'off switch'. There isn't one.
When it comes to more complex missions, however, the concept of a robot running an artificial-intelligence system is,[Professor of robotics at the University of Sheffield, Noel] Sharkey thinks, unlikely. ’You need human reasoning behind it. You can’t put the Geneva Convention into a computer; it isn’t specified for a computer and it contains ambiguity and apparent contradictions that need human reasoning to make sense of. We have no idea how reasoning works or even where it comes from.’
Perhaps Sharkey is right and there is a role for human engagement due to the shortcomings of artificial intelligence. Yet, it was not so long ago, that the fantasies of Terminator remained on celluloid, not in the dreams of engineers. Yet, as defence budgets shrink, robots are cheaper than humans and never sleep.Their role will only increase.