weapons of mass destruction should not get into hostile hands
certain countries use weapons of mass destruction as a deterant to war, while some countries use weapons of mass destruction to threaten war. If these weapons of mass destruction get into the wrong hands of say extremists with an agenda, it is the duty of the world to take the weapons of mass destruction out of their hands.
United states of America and the tiny state of Israel have weapons of mass destruction to protect themselves. When the soviet union broke apart, all the weapons of mass destruction in the former soviet union became vulnerable to theft. We no longer know who owns what.
Weapons of mass destruction stolen include: chemical and biological weapons, nuclear materials, and certain hardware like parts and electronics.
Lord of War and other movies portrayed the high value in theft and the desire for countries to aqquire weapons of mass destruction, even at the cost of the lives of their own people.
Obtaining a biological mask may be futile if everything is contaminated for hundreds of years with nuclear material. If its chemical warfare, you may have a chance.