For them these are obligatory sacrifices, as so often happens in autarkic absolute monarchies.

I'd say North Koreans are totally at ease with such losses seen as a price for live-fire training sessions. UN sanctions hit them pretty brusque during the first Trump's tenure, now those are breached, and, in fact, DPRK resides in a full comfort enjoying support of two SC veto players. Tee-hee.