World War 3 And The New World Order (modern way of war )

Many believe that the third world war will be a nuclear war and after that wars will be fought with stones and bows .People all around the world believe that third world war will surely be fought in future sooner or later and it can't be avoided but they don't realize that the ways of war are changed now and countries don't fight wars by declaring it on one another.Its the new art of war .I