But the vast majority of the human population would suffer extremely unpleasant deaths from burns, radiation and hunger, and human civilization would probably collapse completely. Survivors would earn a living on a devastated and arid planet. That is, until one of them Googled the safety nuclear bomb how to shelter from the beach and found a Business Insider article titled If a nuclear bomb explodes, this is the most important thing you can do to survive. Here's how to act and where to take refuge if you receive an alert about an ICBM or other nuclear threat.
Essentially, I would like to avoid countries with access to nuclear weapons and those involved in nuclear agreements. In view of terrorist and Russian threats to nuclear weapons, it is prudent to make basic preparations.