This is going to end very badly for Putin. The entirety of the world condemns his actions and he's going to find his country living under Iran-like sanctions pretty soon. To make matters worse for him his people do not support this and the Ukrainians are holding strong. In a few days/weeks the Ukrainians will match the Russians in equipment and support from Europe.

This needed to happen quickly for Putin for it to achieve his goals. It didn't and won't. He's going to end up being poisoned by one of his own.