sorry-banning-killer-robots-just-isnt-practical

That's not because it's impossible to ban weapons technologies. Some 192 nations have signed the Chemical Weapons Convention that bans chemical weapons, for example. But it hasn't suggested it would be open to international agreement banning autonomous weapons. In 2015, the UK government responded to calls for a ban on autonomous weapons by saying there was no need for one, and that existing international law was sufficient.