(This is partially a joke. But if any government officials are reading, consider this a freebie from the famous FZ one-man thinktank. ) Ok people, take notes now. The primary threat from nuclear conflict is due to the instability of world leaders, who command these arsenals. At any moment, each one can in a moment of megalomania launch a strike to decimate entire cities. The primary defense system at present is a policy of M.A.D., and futuretech initiatives involving missile defense programs are unlikely to be very reliable as a basis of world peace. As weapons become cleaner and more precise, and the ability to deliver mass destruction with minimum damage to self and allies improves, this vital safeguard is being destroyed. But due to the need for self-protection, securing global disarmament is unlikely. Hence proposal: Install an international automatic system of guided missiles targeted at all world officials, allied or enemy. All nations that are developing nuclear arms, or have them already must sign up or face instant war from signed up nations. The system works by launching an immediate strike at any official that launches a nuke, with or without provokation. This serves as an effective deterrent to all leaders who would consider atomic bombs acceptable policy, by making any such action literal suicide. Hence this reserves missiles as only weapons of last resort. Advantages: Cheap. Reliable - politicians' cowardice is ALWAYS reliable. Little diplomatic implications. No accusation bias etc. Few loopholes. This system can be extended to automatically interprete orders to bomb civilian targets etc. As further protection, the field of the automatic response can be extended to include lower rank ministers as well. Possibilities involve: Coating Big Red Button with cyanide Impregnating firing code slips with ebola Removing blast doors and other protective systems from nuclear silos. Gluing nuclear bombs to the aircraft they are arming. Putting C4 into the bomb-authorisation suitcase carried by the head of state. Converting nuclear missiles into (rather heavy) nuclear GRENADES.