experts who talked about how likely nuclear annihilation was
If it helps, the actual likelihood is about 0%. There are not enough nukes to kill even 99% of the current world population, much less a 100%… they could be built, but it makes no sense, for now.
Unless you live in Russia. They’re all talk about nuclear strikes, but in reality Russia is the one who doesn’t seem to have effective anti-ICBM measures.