Sad bad true.
The difference, big difference, I see nowadays is that Rusia/China woke up and seems to be full committed to NOT let another Afganistan/Iraq/Lybia happen on Iran/Siria.
While USA has been so disgustingly and openly attacking and
colonizing other countries for their resources like if they were playing this game - (right after Afganistan war ends, USA announced the "discovery" of the biggest reserve of Lithium... just to name one example) - trying to suck as much strategic resources as they could without buying them legally, and at the same time ensure more "supremacy" by redirecting these resources as they pleased like with Oil.... While this was/is happening It's also true for instance that they still don't control not even half global oil reserves and other key strategic resources and aside from China, Iran and Rusia are pretty well self-supplied. Plus, China is supplied mostly by Iran/Rusia in many of these key resources.
Remember for instance that Rusia/Iran alone means 45% of world GAS reserves. It's widely known Rusia feeds Europe heavily with their GAS... which one would be their option "B"? Qatar? It's hard to believe China/Iran/Rusia will let their neighbor Qatar, feed their "enemies" with their GAS. Add Qatar and you have 60% of world GAS reserves...
Same scenario can be analized on Oil.
Current major Oil producers are Rusia (#2), Iran (#4), China (#6), Venezuela (#7).
Saudi Arabia and USA in #1 and #3 respectively.
Again, China/Iran/Rusia will not interfere and stop their neighbor Saudi Arabia from feeding their "enemies" with Oil?
In addition, silently, India is aligned behind Rusia/China (as soon as it does not include Pakistan).
This WW3 will be really difficult taking into account you will be fighting powerful countries, rich in many key resources and against 2/3 world people -----> convert it to Hand-Working....
WW3 scenario being so so much difficult it's what it will makes it so sadly devastating for everyone everywhere.
Sad bad true. I hope, as I'm sure thousands and million people hope also, WW3 wont happen but most likely it will

.