I've spent my life farming, largely involving the back end of the horse racing industry, so my framework for modeling the situation is cyclical, from the bottom up.

In relatively stable situations, every niche is filled and every resource is used, selecting for complexity and specialization, until it maxes out, or some external force knocks it over. Then the reset stage selects for adaptability and resilience.

I think China is potentially unstable, given the degree to which the economic momentum has been encased in the hierarchy of the old communist establishment. Look at their real estate markets and the degree of overbuilding as a store of personal wealth.

I suspect Russia is in the most stable situation, given the abundance of resources. Including land that will become increasingly inhabitable, as the climate warms.

In fact, one long term source of tension will be Chinese wanting to move north.

As for the US, when they implode the dollar, the next most viable institutions to issue currencies will be the states and that will lead to fragmentation.

As for globalization, I suspect we will evolve to the point of understanding the planet is as much or more an ecosystem, rather than an organism and it will be more about relationships between the various regional powers, as they come to realize overreach can be fatal, as Russia learned, with Communism and now we are facing.

https://medium.com/@johnbrodixmerrymanjr/parsing-the-zombie-apocalypse-2e4413cefef3