For now, at any rate.

Overextending and Unbalancing Russia - Assessing the Impact of Cost-Imposing Options

Summary:
https://www.rand.org/pubs/research_briefs/RB10014.html

Full report:
https://www.rand.org/content/dam/rand/pubs/research_briefs/RB10000/RB10014/RAND_RB10014.pdf

Interesting little update added in light of recent events:

"Editor's Note, April 2022: We encourage you to explore this research brief and the full report that it is based on. However, because Russian state media entities and individuals sympathetic to Putin's decision to invade Ukraine have mischaracterized this research in recent weeks, we also encourage you to explore this helpful resource on Russia's “firehose of falsehood” approach to propaganda and our research on “Truth Decay,” which is a phenomenon that is driven in part by the spread of disinformation."

Links in original.

h/t and summary:

https://www.globalresearch.ca/rand-corp-how-destroy-russia/5678456