It is not news that autonomous weapons capabilities powered by artificial intelligence are evolving fast. Many scholars and strategists foresee this new technology changing the character of war and challenging existing frameworks for thinking about just or ethical war in ways the U.S. national security community is not yet prepared to handle. Until U.S. policy makers know enough to draw realistic ethical boundaries, prudent U.S. policy makers are likely to focus on measures that balance competing obligations and pressures during this ambiguous development phase.