Who would be the warring parties?
I don't know.
I think China will be a huge component of it.
Russia alone cannot hope to endure in a confrontation against the richest billion people in the world. Therefore, the only thing that could balance the scales, would be the ability to tap the virtually infinite manpower reserves of China. Then, as the more experienced party, Russia could act as the "elite" firefighting component, while China plugs the holes everywhere else through its sheer mass.
But even having China on-side, is no guarantee that we can outlast the West. Brazil, India, Egypt, Iran, South Africa, and Indonesia will have to decide where they throw in their lot.
The end goal, as I see it, is to redraw the security and trade infrastructure created after WW2, to more objectively reflect the shifting power balance in reality.