From the summary of the U.N. Report of the Special Rapporteur on extrajudicial,summary or arbitrary executions, Christof Heyns. The report calls for a suspension of lethal robotic technology until international rules can be drafted:

Lethal autonomous robotics (LARs) are weapon systems that, once activated, can select and engage targets without further human intervention. They raise far-reaching concerns about the protection of life during war and peace. This includes the question of the extent to which they can be programmed to comply with the requirements of international humanitarian law and the standards protecting life under international human rights law. Read More →