I think if we look in the back our warehouses, we would find some nukes that are past their “use by” date and, so, are carried on the books at zero.
Nukes in warehouses don’t count.
The totality of numbers for any country (in order, Russia, USA, China, France, UK, India, Pakistan, Israel and North Korea (Iran???)) for all nuclear weapons are not the numbers available to go to war on a moment’s notice.
The warheads currently in missiles—silos, truck carriers or submarines, in cruise missiles, and bombs in aircraft bomb bays—right now—is what will matter. In other words, are they in delivery systems that can launch/take off right now?
The known warehouses (these are well known through intelligence and technical means) will be vaporized with the first strikes of any country.
And the leadership of each country will be high-value targets, too. Intelligence on all sides keep track of their location every minute. When we see Putin head for his bunker, NORAD will activate a higher DEFCON and SAC (meaning Strategic Command, now without the “Air”) will make ready as best they can.
This equally applies to Biden, Xi, Macron, Sunak, Haq Kakar, Modi, Netanyahu and Kim. Each adversary tracks their opponent’s leadership.