Earlier quoted context omitted.
No.
Ok. So then, how can you pretend to be against the killing of civilians if you choose more rather than less of it?
If IHL were deeply ingrained in international political behaviour and absolutely established I could see deviations from it where such deviations could be justified on moral grounds as acceptable, but since the law is hardly even established it is more important that it be followed than that it minimizes suffering in the now.
Furthermore, I don't think that it mattered. Everyone places his tactical concerns very highly in the moment, but over time they are often irrelevant. Do you really think it matters now, whether that information was available or not?
I don't really believe there's anything useful that can be achieved when it comes to the North Korea's nuclear weapons. They have them, they'll probably try to build more of them. That sucks, but there's nothing that can be done.