Ominous signs indicate that Russia may conduct a military offensive in Ukraine as early as the coming winter. Moscow has quietly built up its forces along the Ukrainian border over the past several months, which could be a prelude to a military operation that aims to resolve the political deadlock in Ukraine in its favor. Although Russian President Vladimir Putin may once again be engaging in coercive diplomacy, this time around Moscow may not be bluffing. If no agreement is reached, the conflict may renew on a much larger scale.
Why would Putin risk geopolitical and economic upheaval by reigniting
https://www.foreignaffairs.com/articles/ukraine/2021-11-22/russia-wont-let-ukraine-go-without-fight