It's possible to be more cynical about this, but yet to come to a more optimistic conclusion. If the world's great military powers publicly swear off "killer d

It's possible to be more cynical about this, but yet to come to a more optimistic conclusion. If the world's great military powers publicly swear off "killer drones" (let's assume we can meaningfully define such a thing), then they will continue to develop them in secret, but they won't use them in every little border skirmish: every Iraq, Syria, Afghanistan, or Crimea. They'll keep them for the big game. This has two good effects (assuming further development of killer drones is bad). Firstly, those of us unfortunate enough to be caught up in the horrendous bloody conflicts I callously described as "border skirmishes" won't additionally suffer from killer drone attacks. Secondly, development of the drones and the military doctrine surrounding them will be stymied: you can do a lot in the lab but any technology develops so much faster with the feedback loop that comes from using it in anger. Moreover, if there's a big war we're all screwed anyway. If that's your focus, you need to argue that drone availablity makes a big war more likely I'm not convinced that it does - making war cheap makes small war more likely, but all the decision makers know the cost of a big war. Edit: compare to anti-personnel landmines, or chemical weapons. Both of those see less use because of weapons bans. You might say no, they see less use because the great military powers no longer need them - but you're missing a step. The great powers no longer need them, they decry them as inhumane, they sign bans, and then (almost) everyone stops using them.