But, I do not see a world war three type of big deal. We have nuclear weapons now, so a world war three is impossible, if anything gets too serious, then some maniac will shoot their nukes, and we will all be gone.
World Wars in that sense ended with number 2. After Nukes, the world entered a different way of wars and we are currently in World War 5 because the way these wars are fought are changed. The third one was what is known as the cold war (between US and USSR) which the West won, the forth one was NATO's war of terror which despite all their destructions the West lost, and the fifth one is currently ongoing. A proxy war (proxy armed conflict) which we see in Ukraine between NATO and Russia, the US backed terrorist proxies fighting Iran and its allies in the West Asia, and the proxy war they are trying to start with China through Taiwan. WW5 has other aspects too like the economic war US regime is waging against the world.
They are more like covert wars than world wars as they are not fought with troops personnel (who only act as a security guarantor), and instead of fighting with conventional weapons such as AK-47s, tanks, Apaches and nukes, the world powers are using completely different weapons such as RATs (remote access trojans), troll farms, spyware, and drones.