Europe

If they [Nato] can defeat an enemy

No one wants to defeat or have war with Russia (nor China or any country). That wouldn't make sense. NATO could have entered the war in Ukraine at any time (with the "excuse" of Russia did "strike first" as you said), but it didn't, because this war -like any war- doesn't make sense.

The US has set up bases all around Russia

Fair. But didn't Finland recently and all other countries before join Nato voluntarily? Why so?

in hopes that they'll magically become democratic

If we do what the people want -in Russia, Ukraine, and everywhere else- then we would "magically become democratic". I argue that no soldier in the battlefields wants to be a soldier, and those who want the war are not in the battlefields. But in non-democratic societies, people don't make the decisions (and, yes, no democracy is perfect, there's is a lot do and the work may never end).