My opinion on this is that Russia hasn't made it quite clear what they want to achieve on this war. It feels like they are making the rules as they go.
First they had indicated NATO wants to expand near its borders, Ukraine were building nuclear power, Ukrainians were Nazis. Its really mind boggling how people can play around with human lives trying to accomplish egocentric ideologies that would only benefit a few if any. This is the same thing happening across the world including Africa where if a country has a lot of naturally valuable resources, the rich have ensured no generation will ever know peace.