> hide under desk, die later

This is a misconception. There will actually be many survivors outside of the blast areas if low-yield weapons are used. If you are outside of the blast radius, or on its fringe, you will have minimal to no damage. Fallout, radioactive particles from the explosion falling back to earth, is your primary concern. The videos explain this in detail, in the US Civil Defense film AND an in-depth one made by the Department of the Army. Just check the playlist.

YOU CAN SURVIVE IF YOU ARE SMART! DO NOT BELIEVE THE MISCONCEPTIONS OF TV!

I bet people say Nukes aren't real because of the Sci-Fi lore and don't actually know the real stuff