Comment by Hamuko

Russian nuclear doctorine is just words on paper and doesn't mean anything. Their nuclear doctorine already allows them to nuke any NATO country at will because "any attack by a non-nuclear power (Ukraine) supported by a nuclear power (US, UK, France) would be considered a joint attack" and "any attack by one member of a military bloc would be considered an attack by the entire alliance". And even if they didn't, there's no actual opposition that could prevent changing the doctorine as they wish.