That's supposed to stoke fear? If anything it's embarrassing for Russia that they're relying on North Korea.
Even back in the Korean War, while the North Korean KPA was very effective, that was mostly due to significant support from China and the Soviet Union (and on the other side, the South Korean ROKA was only able to push back with significant American support).
That’s why I stopped recruiting North Koreans for my mercenary group. They always want equipment and rations. Like, don’t you have fingernails and teeth? Eat a raccoon and quit asking me for help. Damn. I’m already paying you 500 won a day.