There will be no WW3 in the ways we understand. What I mean is this.
When you look at the costs in damage and lives in WW1 and WW2, nobody wants WW3. The banks and rulers of the world don't want it. Why not? It takes their steady profits away.
The reason that we have had all the little wars since WW2 - Korea, Viet Nam, Iraq, Afghanistan - is because we were in WW3 right at the end of WW2. We have been in WW3 since the end of of WW2, starting with the Korean War.
This is the way to do war. A little at a time. That way there are no big losses that need to be accounted for. and there is no way that the Rulers of the World can easily be pushed off their seats, out of their positions. WW3 is here and now, and if it ever stops, what will WW4 look like?
WW4 will be the thing that stops WW3 by taking its place. WW4 will kill the whole world.