On Russian nukes.
I simply don't believe that Russia is capable of doing what is needed to keep them usable. The USA spends more than the entire Russian military budget on keeping them operational.
https://apnews.com/article/nuclear-warheads-military-bomb-plutonium-6b86198def4516cebe496c9f5fbfbb75
Some probably still work.
But not many...
Inside the delicate art of maintaining America's aging nuclear weapons
The U.S. will spend more than $750 billion over the next decade to overhaul nearly every part of its nuclear defenses and replace systems that in some cases are more than 50 years old. But until each of those programs is ready, it's up to young military troops and government technicians across the U.S. to care for the existing bombs, often through delicate maintenance performed by hand. The Associated Press was granted rare access inside military nuclear missile bases and government weapons facilities to report on how they are adjusting to meet the increasing workload. There are many missile silos across the Midwest region states.
Nick Stevens Graphics
Julius Jääskeläinen