For what it's worth, and if it makes you feel a little safer, nuclear weapons do not "store" easily. They are actually very intricate and complex devices and every part must perform within a narrow tolerance band in order to achieve an atomic detonation. For this reason, they require constant maintenance and attention using very sophisticated and expensive test equipment that is hardly available at Radio Shack. Therefore, the current fear, made popular in movies and paperbacks, of an ex-Cold War nuke being smuggled out of one of the ex-Soviet satellite countries and hidden in a warehouse for several years until purchased by a terrorist, is not likely to remain operative.

Anyone who has been in the USAF's munitions career field can tell you how much trouble it is to keep a nuclear device in reliable condition.