This whole things seems like a terrible idea for Russia. This invasion will trigger even harsher sanctions (basically up to the limit of what's possible), which will only hurt their struggling economy more and increase their dependence on China. And whatever you think of China, they don't have Russia's best interests at heart, they have China's. Russian demographics are some of the worst in the world, so every dead Russian soldier hurts them way more than even a dead American soldier. Pacifying Ukraine will be a long and bloody affair, and it opens up a whole new front that never existed before to fight the Russians by proxy. The US has a lot of experience supplying resistance groups, and between Ukraine, Syria, and their new operations in the Sahel, Russia's forces are going to be spread really thin. Meanwhile NATO is just collecting footage of burning airfields and helicopters over Kiev to show to any nation that's hesitant about joining. After so many years of struggling to justify it's existence, trying to pivot towards the pacific, then back to Europe, then back to China, NATO finally has a clear and undeniable mission again.

I really don't see many positives in Russia's future.