The rhetoric about Ukraine falling in 3 days came from the West, not Russia. [1] And it's highly improbable that "we" actually even believed that. Wars don't ever end in 3 days, and Ukraine had been pumped full of arms for years, had multiple cities that been heavily fortified for war, and an army approaching a million men, large numbers of of "ultra nationalists" itching for a fight, and all of this before all men of "fighting age" (up to 60) were locked in the country and started being forced into the military. Why we were putting out nonsensical rhetoric that could serve no viable purpose other than to try to entice an invasion (and as such would normally be classified) is a question with only one apparent answer.

The only other NATO members that bordered Russia before the Ukraine War were were the Baltics. They have poor geography for an invasion and would also be immediately cut off from mainland Europe in the case of a war by the Suwalki Corridor - a tiny stretch of about 40 miles that is the Baltics only connection to Europe outside of Russia/Belarus. By contrast Ukraine has ideal geography for an invasion. Kursk is also the path the Nazis ended up taking when trying to press into Russia during WW2, and also where they suffered a very costly defeat.

I do fully agree that Russia expected their negotiations with Ukraine to be successful, and had the West not intervened they likely would have been right.

[1] - https://www.newsweek.com/even-russian-propaganda-was-hesitan...