There is a mistakenly published article that explains the ideology, an article that should have been published after successful occupation of Ukraine:

https://web.archive.org/web/20220226051154/https://ria.ru/20...

Basically: Russian people and territory re-unification before letting the cultural erosion making it impossible, which is seemingly insufferable.

Then there is some rambling about a new order due the coordination of Ukraine Bielorussia and russia would make Europe autonomy crumble.

Then the world was expected to be in awe in such a display of power, and that would have made all countries realize that west dominance is in jeopardy.

It's that a simple madness.

french translation here: https://www.fondapol.org/decryptage/la-russie-na-pas-seuleme...