http://www.ted.com/talks/view/id/504 Why can't robotic tech be use for peace instead ? Its always about war and more bloodshed.
The speaker brought up a good point though. Can robots nurse their own intuition and killer instinct ? As the means of killing can be further remove from the realms of our eyes to see death and destruction at first hand, there will be little restraint left. Its going to get really messy...
Currently no conventions have been drafted by the UN to ban the use of Robotics in war yet. But you are right... we might need one in the near future soon.. :/
It's going to be USA robots vs China robots. no more humans. I'm sure there will be a protocol in the software to cease fire in case of human presence.