Really? About he only thing you've stated that makes sense is the 1930s reference. Russia was hardly a jaugernaut then, and she isn't today.
If we hadn't entered the war, Russia would not exist today. China has her own problems. War is on the horizon, but the teams are still being drafted. Have patience...
I heard the same arguments in the 1930’s about why there can’t be another war, similar to WW1. The argument then, as it is today, that “NO ONE IS STUPID ENOUGH TO START ANOTHER WAR THAT WOULD ENVELOPE THE WHOLE WORLD”. The catalyst that started WW2 was the world wide financial crash in 1929. We are headed for another world wide financial crash, and this will bring out the world dictators to begin to want what other countries have that they don’t have.
What you are forgetting, is that Germany and USSR signed an agreement, prior to WW2. The only reason that this happened was both of these dictatorial countries saw an easy picking in POLAND. The USSR had nothing to lose with this agreement, and they gained territory they always wanted from POLAND. Meanwhile in the Pacific side, Japan knew that they had a free hand, until they were stupid enough to attack the USA. All of these countries in the 30’s that were gobbling up their neighbor countries were all dictatorial. I see this happening today.