I went to a Titan or Nike missile museum once and they had an exhibit on the probabilities for Russian nukes working and reaching their targets also including i

I went to a Titan or Nike missile museum once and they had an exhibit on the probabilities for Russian nukes working and reaching their targets also including interception. They are way lower than USA. That means that Russia had to have considerably more nukes to achieve a high probability of success in hitting intended targets. I'm not sure how that plays now based on disarmament and technological updates.