“Lethal autonomy is inevitable,” said Ronald C. Arkin, the author of “Governing Lethal Behavior in Autonomous Robots,” a study that was funded by the Army Research Office.

Arkin believes it is possible to build ethical military drones and robots, capable of using deadly force while programmed to adhere to international humanitarian law and the rules of engagement. He said software can be created that would lead machines to return fire with proportionality, minimize collateral damage, recognize surrender, and, in the case of uncertainty, maneuver to reassess or wait for a human assessment.

In other words, rules as understood by humans can be converted into algorithms followed by machines for all kinds of actions on the battlefield.