What are the choices?
Perhaps giving the Ukraine as much ammunition, anti-tank & anti-aircraft systems & medical supplies as we can to make the cost to Russia higher than Putin anticipated. Russian has a serious demographic issue. Bleeding the supply of young fit men could possibly change the risk-reward equation?
https://www.rand.org/pubs/issue_papers/IP162.html
https://moderndiplomacy.eu/2021/02/03/moment-of-truth-russia…
https://population-pyramid.net/en/pp/russian-federation