It depends how well European countries are able to defend themselves (and their political systems) from attack and corruption by Russia. So far, IMO, results have been mixed. I am hopeful for Europe though.
France built an independent system, the UK did not.
https://www.gov.uk/government/publications/uk-nuclear-deterr...
"Although the UK’s nuclear deterrent is assigned to the defence of NATO, we retain full operational control over its use. Only the UK Prime Minister can authorise the use of our nuclear weapons, even if used as part of a wider NATO response."
It's also just not at all believable that they would not be able to push their own buttons. Why would it be set up that way? And what would prevent fixing it even if it were?
The reason Russia has succeeded so far is because most parties have _minimized_ their engagement with the conflict _and Russia is still loosing_.
The only reason Ukraine’s flag is not in Kremlin is because Russia has nukes.
And anyone can get nukes.