By BY JONAH M. KESSEL, NATALIE RENEAU AND MELISSA CHAN from NYT Technology https://ift.tt/2YJeZlS Gun Control, Biological and Chemical Warfare, Computer Vision, Facial Recognition Software, Civilian Casualties, Robots and Robotics, Defense and Military Forces, Politics and Government, Driverless and Semiautonomous Vehicles, Computers and the Internet, Artificial Intelligence, United States International Relations, Nuclear Weapons, Radar, Afghanistan War (2001- ), Mines, Explosive, Laboratories and Scientific Equipment, Regulation and Deregulation of Industry, Treaties