After entering into a military alliance, 10,000 to 12,000 North Korean soldiers were deployed to Ukraine. The move had serious shortcomings - the Nnrth Kor soldiers were not taught how to speak Russian, they had not seen war, and no idea of what they were doing.
Plus they were expeosed to internet and Western affluence. In the Ukraine war, they ran away from the battle front, probably scared wandering far into Ukraine forest. Now tighter oversight and supervision was resorted to.
But this does not bode well for the alliance nor quick Russian victory in Ukraine