Few days ago as I was reading, I have seen what would be the area that might get affected if a nuclear missle or bomb has been sent from Russia to Ukraine and the I can say the radius is just huge, I mean I live the middle east which isn't really that close and it is supposed to wipe the whole country which is insane.
I've never read before about nuclear winter and so, and to be honest that sounds scary, I'm thinking who is that crazy to start some shit like that in the first place.
Many have been arguing that nuclear bombs are just deterragainst war but I say that's bullshit. You don't keep something that can annihilate the entire planet as deterrence. All it takes is one crazy fellow becoming the commander in cheif.