"You're assuming that Russia would feel like it needed to conquer its neighbors in a peaceful world."
? Yes, Putin has been trying that for 20 years.
Putin + Kremlin believe that Ukraine is 'not a country' and is a 'vassal of Russia'.
Straight up.
They have been actively doing things to support this for a very long time.
See: Yanukovich, the laughably clown dirtbag who is the Belarus/Lukashenko analogue.
Here is a good articulation of the Geostrategic and Historical Russian Nationalism:
(Article was put up by accident in Russia but taken down)
https://web.archive.org/web/20220226051154/https://ria.ru/20...
here is the English translation:
https://docs.google.com/document/d/1z7zQiS-99mhqmJqJ-r-a2MJc...
This is not about 'defence and NATO'.