Six officers from North Korea were among the 20 soldiers killed in a Ukrainian missile strike on Russian-occupied territory near Donetsk, intelligence sources say.
Why kill officers of a country that is helping the invasion of your country? Are you serious? It's not like they sent the missile all the way over to North Korea.
I'm not going to ascribe any moral grading to these NK soldiers, for all I know they were forced to deploy against their will, or maybe they volunteered.
Either way, it doesn't matter. They were active participants in a conflict, and deployed within a war zone. That means they were legitimate military targets to be killed, or captured.