I dunno. Russia says they're going to commit a genocide in the very near future.
Well, not really. Not in the sense of killing people, although it would be in the sense of destroying a culture.
Russia is dying. Slowly, steadily dying. People said Germany had a problem - it's not a patch on Russia. The USSR had a population of ~250-300 million, which made it powerful. Russia, upon the USSR's break-up, had about 150 million. It's currently just over 140 million, and it would be much worse were it not for the millions of ethnic Russians that have migrated to the motherland from other ex-Soviet states - and that's a limited resource. Even though Russia tried to spur the birth rate with child-friendly policies, it didn't work. Not only that, but the population is also receding into the western Russian core. All across the swathes of central and eastern Russia, villages and towns are dying and being abandoned, and the infrastructure collapsing with no-one to support it. In the long run, it's hard to think how little, dwindling Russia could think to hold it, and I'm sure China would be very interested in those natural resources.
It's that population issue that limits Russia and condemns it to being a second class power - soon it won't even have the manpower for its army. So if Russia cannot get its population up by the conventional means of breeding, it can instead take that population by annexing neighbouring countries. So the aim is very much not to kill too many Ukrainians, because they are required to fend off Russia's population crisis.
I also suspect that's why Russia can't necessarily fight this war for that long. If you've got five children, losing three is bad, but at least your family has a future with the remaining two. But Russian families whose kids are dying are often one child families, and when that poor sod packed out for Putin's ambition is dead, that's it. You can live all the way on to your eventual grave knowing you have no legacy to pass on. And I think that will generate a great deal of discontent.