inevitably lead to a clash with other nations, which would not accept Russian tanks on their borders
When we don't want foreign tanks on our borders, it's good. When they don't want it, it's bad.
What was it?
Their illegitimate war of aggression on their border 850 KMs from their capital city
https://www.yahoo.com/news/die-welt-publishes-peace-deal-230752941.html
https://www.reuters.com/world/europe/russian-negotiator-confirms-several-long-conversations-took-place-with-ukrainian-2022-04-22/
https://www.livemint.com/news/world/putin-publicly-shows-draft-of-peace-treaty-signed-by-russia-ukraine-in-2022-watch-11687136116863.html