> Is there any room for good judgment, to weigh ethics, ability and consequences, and have a different approach in different situations?

Yes. War can be unethical but the most ethical response to an action. In practice, there are few ethical wars, which is why having any ethical conversation about war is incredibly draining and not worth it for most people: it is often sufficient to simply state war is carte blanche unethical.

Thankfully I don’t see any ethical wars on the immediate horizon.