If world war III is happened then the earth is lost by nuke weapons. So therefore world war III by using media outlets, news. They debate each other for more relevant issues. Then its called a word war or also known as the word war III. It is happening now because of climate change issues.
If in a nuclear World War III to be used as a weapon, then there is no longer a safe place to live. The use of nuclear power as a weapon of war is a terrible thing. When the Chernobyl nuclear burst alone should be a terrible incident, which was just in the area. Imagine if nulir explode everywhere during the war, if there is no means to ward off radiation, people will suffer.