How about this as the justification for not slaughtering hundreds of cadets? It leverages the Neuer Mond Treaty and Battle Chess, which I like, but it doesn't have the punch of a mass killing.
“What I don’t understand is why they didn’t kill the cadets. Obviously, the attackers’ weapons were set for burn.”
His mother nodded. “The Imperium’s fingerprints are all over this. The assailants followed the Neuer Mond Treaty to the letter. It forbids lethal assaults against minors. The Realm has been trying to negotiate with the Imperium for the removal of the word “lethal” from the treaty for years, but the Imperium has yet to agree. We will respond with equal force, but for better or worse, this event doesn’t qualify as an act of war under the rules of Battle Chess. The dead police officers are considered combatants, making them legitimate targets.”
The other option is to keep the mass killing, but remove some of the gratuitous elements, such as dismembered limbs, circling birds, and buzzing flies.
Thoughts?
Dirk