War is terrible. However, I think we are already seeing a different kind of WWIII playing out. Its not happening with guns and tanks, but its happening on the internet. Cyber warfare is being engaged on a daily basis between countries. In addition, there are countless proxy wars taking place around the world. I don't expect a full on war between superpowers because of the fact that nuclear weapons now exist. They would pretty much destroy each other and there will be no winners.
Cyber warfare is perhaps better than the real warfare. Till now, no lives have been lost as a result of cyber warfare. Also, the cyber warfare targets politicians as well as soldiers, unlike the physical war where the politicians are safe.
Cyber war, political and diplomatic war and war intelligence have always existed and are maintained to this day. Just real physical war, it is the last argument in someone's evidentiary basis of the correctness and views.
True, physical war will be the end from evidence, and will prove who is the most powerful. Cyber war, political war, a diplomatic war, etc. has occurred for a long time, it will not end. Because that would end it is a physical war. World War III will utilize nuclear to destroy. There are 9 countries that have nuclear weapons are deadly and they will use in World War III. Seizure of territory and many countries are destroyed in this war, and there will be long impacts. Perhaps as depiction we can see what happens in World War II, but it will be more severe.