Those questions are moot. There are situations where it's simply impossible to have a human in the loop because reaction time is too slow or the environment is too dangerous or communication links are unreliable. Russia is deploying fully autonomous weapons to attack Ukraine today and they will be selling those weapons (or licensing the technology) to their allies. There is no option to stop. And let's please not have any nonsense suggestions that we can somehow convince Russia / China / Iran / North Korea to sign a binding, enforceable treaty banning such weapons: that's never going to happen.