Yes, killing is morally reprehensible. But given that we'll not end the practice of war anytime soon, how can you regulate all the senseless killing people are

Yes, killing is morally reprehensible. But given that we'll not end the practice of war anytime soon, how can you regulate all the senseless killing people are determined to carry out so that it at least some pretence at morality is upheld. That is the sort of problem I had in mind.