Yeah, just a few dozen more North Koreans, and Russia will be stomping all over us like the original Godzilla. On the set. In a costume. Yes, the man in a foam rubber Godzilla suit, trampling all over a movie set.
That's Russia.
Troops from North Korea, arms from Iran, rusting tanks, and ships that could be sunk with a fart. That's why you don't hear about the Russia's navy's involvement. That ended long ago.
China is a danger to the region, but outside of that, not so much. And they have absolutely no need to put their neck on the block for the sake of their nemesis Russia, let alone lose their number one customer in the world who made them what they are and without whom they'd go back to what they were before Nixon.