Japan's Swiss-style nuclear bunkers

With nearby North Korea stepping up missile launches and nuclear tests, people in Japan are preparing for the worst by building private nuclear shelters using Swiss technology. (SRF/swissinfo.ch)

Switzerland itself has one of the densest networks of nuclear bunkers in the world, with a "bunkers for all" policy which means that every person in the country should have a spot in a nuclear bunker, should disaster break out. Many residential buildings have shelters built into the basements.