World War 3 is unlikely to be a direct kinetic war between the US, Russia, and China.
Instead, the conflict will play out on different levels.
Discussion
Nice to read. If BRICS starts to win all proxy wars, then a kinetic war will be highly probable though... The first nucleair weapon deployment could very well come from the NATO side.
A good analysis of the current state of World War 3...
The author states that Brics and Nato are about equal in cyber attack ability. I agree, but I would guess the US is more dependent on internet connected systems and could be destroyed more easily if an attack was successful. Also, American would die if they lost their internet. They can't handle much, if any, hardship. The citizens in the Brics countries are more used to hardship and could manage better if their systems failed.