https://www.reuters.com/business/aerospace-defense/exclusive-us-assesses-up-60-failure-rate-some-russian-missiles-officials-say-2022-03-24/ https://www.reuters.

https://www.reuters.com/business/aerospace-defense/exclusive-us-assesses-up-60-failure-rate-some-russian-missiles-officials-say-2022-03-24/ https://www.reuters.com/business/aerospace-defense/exclusive... google "russian missile failure rate" and you can find many more articles