Ok, it seems like the video talks about the dissolution of russia, not just weakened state. The video talks about the day US defeat russia and russia have to dissolve into multiple small countries. They afraid that once that happened, the newly formed independent state will be occupied by US(kinda like Afghanistan) and then china will lose their military strength. To prevent that, china need to annex(their word) it themselves. After that UN is not needed, and everything need to went through China.

So basically its some ultranationalist wet dream in video form.