When bombs can pick whom to kill

Britain, Israel and Norway are already deploying missiles and drones that carry out attacks against enemy radar, tanks or ships without direct human control. After launch, so-called autonomous weapons rely on artificial intelligence and sensors to select targets and to initiate an attack.

Britain’s “fire and forget” Brimstone missiles, for example, can distinguish among tanks and cars and buses without human assistance, and can hunt targets in a predesignated region without oversight. The Brimstones also communicate with one another, sharing their targets.

Armaments with even more advanced self-governance are on the drawing board, although the details usually are kept secret. “An autonomous weapons arms race is already taking place,” said Steve Omohundro, a physicist and artificial intelligence specialist at Self-Aware Systems, a research center in Palo Alto, Calif. “They can respond faster, more efficiently and less predictably.”

Concerned by the prospect of a robotics arms race, representatives from dozens of nations will meet on Thursday in Geneva to consider whether development of these weapons should be restricted by the Convention on Certain Conventional Weapons. Christof Heyns, the United Nations special rapporteur on extrajudicial, summary or arbitrary executions, last year called for a moratorium on the development of these weapons.