If I die from a nuclear blast...well, I die from a nuclear blast.
I don't live my life every day worrying about some podunk country half a world away with a crackpot dictator. I don't gain anything by being stressed out and worried about a nuclear holocaust. If it happens, it happens.
I trust that the people in power, while stupid and corrupt, aren't stupid enough to plunge the world into Armeggedon over stupid crap.
Of course, my plan for a nuclear launch is to just get in my car and drive towards ground zero. Less traffic and more fireworks...