I have to agree, we either face him down and fight him now, which while unpleasent, stands some chance of success, or we wait until he has decided that he no longer accepts the reunification of Germany, having already overrun the Baltic states, Poland and states to the south. So we then end up having the same fight several hundred miles closer to our shores, and after a few million people have been killed, and Europe is broken and overrun with displaced people. Just to clarify Putin has invaded, with no justification, a democratic country, who share a lot of history, and is going to grind it into the ground if he can killing as many of the Ukrainians as he can. If he can do that then what hope for say Germany, where there is a history of conflict.
It may not be what people want to hear, but history says thats how it will work.