U.S. officials believe Kyiv will fall in 4-6 weeks, with Russia/Ukraine war lasting over a decade.
https://www.cbsnews.com/live-updates/russia-ukraine-news-kyiv-war-putin-invasion-talks-today/#post-update-8de46653With the amount of Ukrainian propaganda floating around, there is this notion that Ukraine is winning this war or even has the potential to win this war. It simply is not true. The Russian military has too many resources to throw away and the economic ramifications does not effect Putin directly. His fragile ego will put his political ambitions over his constituency. So without any input from NATO, this is prolonged losing battle for Ukraine. It seems like Russia has been targeting civilian areas over the last few days, and there are some reports that it might ramp up within the coming weeks.
A 10-20 year time line sounds reasonable, and at the end Ukraine might end up being a wasteland like Afghanistan.
And after that Putin most likely will be dead and so will be his ideas of the Russian Empire.
I think what might actually result from all this, is that Russia will be broken up into smaller countries, stripped of its nuclear weapons, and
heavy sanctions will be imposed on them to payback for all the damage they have caused. Think Germany after WWI.
The US, Japan, and China will probably exploit them for their resources.