If there is a WW III it probably will be over water (taking from the great lakes, polar ice-caps, salt to freshwater machinery). So if there is a WW III it will be with nuclear weapons. My take on it is their are certain contries that should have right to power. Like the USA, Russia, Switzerland, and England. These countries are trusted and will know to use them when the time is right. On the other hand the thought of Iran, and North Korea is not the greatest. Think of their nuclear arms as a peace keep between nuclear equipted countries. Also I think the world superpowers should come up with some idea before all hell breaks loose.