I think it still makes sense to me that they were too used to just rolling in and assuming power like happened many times after WW2. Czechoslovakia, Hungary, p

I think it still makes sense to me that they were too used to just rolling in and assuming power like happened many times after WW2. Czechoslovakia, Hungary, post-Berlin interventions like in Georgia, then Crimea most recently. I think they expected Kiev to be the same. The real question is why did the latest intervention turn out different? What changed?