In this era of electronic communications which affects every aspect of modern life (banking, shopping, telephones, Internet, electricity supply, food deliveries to supermarkets, military communications etc.) there is no need for nuclear weapons. These systems will be knocked out by someone sitting in front of a computer somewhere in the world and will result in total anarchy within days. Isn't it reckoned that we (in the UK) are only 6 meals away from total social breakdown? The people who will survive will be those who live in what we would regard as primitive conditions e.g. those who live in third world countries, grow their own food, keep their own animals, don't need/rely on modern communications.