Apropos propaganda: Please show video evidence of North Korean troops fighting in Ukraine, or even in Kursk in Russia.
That North Korea and Russia would have troops train together is quite logical. Our Western plan to isolate Russia has resulted in the worst situation for us both militarily and economically - Russia and China have been pushed together.
China has supported North Korea since the early 1950s at least. Thus China and Russia coming together means North Korea comes along. North Korea has things Russia needs and wants (mostly armaments), and Russia has things North Korea needs and wants (mostly food and jobs). Russia and North Korea working together militarily means by necessity that North Korean troops would start to train with Russia.
So back to the top. Show video evidence of North Korean troops fighting in Ukraine or the Kursk area of Russia or I'll continue to believe that the "North Korean fighter" story was just a story the US made up to justify allowing ATACMS being fired into Russia.