During the last two years, I was writing a book with my friends, about the Soviet Nuclear Weapons stored in Hungary between 1961-1991.

https://sites.google.com/view/nuclear-weapons-in-hungary/

Detailed account of Soviet Nuclear Weapons stored in Hungary.
Inter-Governmental agreements, detailed technical description of delivery systems, nuclear weapon types (warheads, bombs, ammunitions), logistics, storages, warplans, exercises, unit histories and organization, nuclear weapon inventory numbers, and accidents.