Let me throw this out. Unlike with the Ukraine, little far-away Estonia is a member of NATO. If Putin should decide to take Estonia, he could overrun the entire country in a few days.
Then what? Would we mount some sort of WW II-style grand campaign to eject the Russians? Or would we do nothing substantial, and so break the NATO pledge?
It is not in Putin’s interest to take Estonia unless he plans to also take Finland.
What IS in Putin’s interest is getting Germany to end the American occupation, which, in my opinion, he is halfway to accomplishing.
A grand realignment in Europe is underway. Nobody cares two figs about an independent Ukraine, or Belarus, except (perhaps) the people who live in the former Polish/Austrian territories. The Baltic States, with the possible exception of Latvia, are different.