The article explores the ethical quandaries of a just war exacerbated by lethal autonomous weapon systems (LAWS). Topics discussed are traditional principles of just warfare, LAWS as hard tests of just war theory, LAWS as risk to the just war precept of last resort, moral agency of robots, LAWS as violation of international law and Christian ethics, autonomous weapons used outside of war, arguments regarding the banning of LAWS, and role of human judgment in the creation of rules of warfare.