One of Russia's biggest miscalculations was its military readiness. It's now pretty clear that their vision of how the invasion would play out has not matched reality, largely due to corruption in the armed forces.
This actually feels somewhat similar to the US pullout in Afghanistan last year. In that case, the Taliban regained control of the country very quickly because many of the military assets that the allied forces were counting on simply didn't exist, they were overestimated figures for local military officials to siphon cash out of the military with.
Russia seems to be in a similar boat. They're not nearly effective enough to maintain supply lines and there's a lot of reporting that many of the infantry are young conscripts that weren't told what they were about to do. This reeks of a corrupt military collapsing under its own weight.
This actually feels somewhat similar to the US pullout in Afghanistan last year. In that case, the Taliban regained control of the country very quickly because many of the military assets that the allied forces were counting on simply didn't exist, they were overestimated figures for local military officials to siphon cash out of the military with.
Russia seems to be in a similar boat. They're not nearly effective enough to maintain supply lines and there's a lot of reporting that many of the infantry are young conscripts that weren't told what they were about to do. This reeks of a corrupt military collapsing under its own weight.