No, it wouldn't. It would change the world, but that's it. Most of Russias nuclear arsenal is old and non functional. They don't have Aegis like we do. It would end Russia, but we could easily survive. Russian defectors who were in charge of their arsenal in the 70's said even back then most of their junk was rusty and barely functional. They don't have the economy to keep up a huge arsenal like we do. So they built it, and then abandoned it.
Their ENTIRE military budget is equal to what we spend in MAINTENANCE on our equipment.
(An unarmed Minuteman III intercontinental ballistic missile launches during an operational test at 1:13 a.m. Pacific Time, Oct. 2, 2019, at Vandenberg Air Force Base, Calif. The test demonstrates the United Statesā nuclear deterrent is robust, flexible, ready, and approximately tailored to...
middleeasttransparent.com
When Russia invaded Ukraine in 2022, a curious thing happened: Putinās modern, lethal fighting force turned out to be a broken-down, two-bit shadow of its former self.
Ukraine has used our decades old Patriot missile system to shoot down missiles from Russia that are considered hypersonic. That would mean our old stuff can still shoot down their newest stuff that MIGHT be deployable and functional.