“Moral law of war? War is the greatest immorality there is! Listen , it’s been fun. Good night.
Depends on the war's goals and methods. Defensive wars and defensive behaviors are moral and just. Wars prosecuted with a chivalrous posture, especially toward non-combatants, are prosecuted justly. Usually, many such aspects intersect in a particular war, making the judgment complex, but it does not mean morality has no place in a war at all.
It's morning where I am, time to go to work. It's been fun, thanks.