Russia vs China

[Araxen]

Leaked Russian Documents Reveal Deep Concern Over Chinese Aggression

With a new glimpse at Russian war planning, the West is starting to get a better understanding of just how much Russia fears a resurgent China

www.forbes.com

It's Forbes, but it's an interesting article. It says Russia has a lower barrier to use nukes against invading China in the east.

Concrete evidence of Russian plans for a nuclear response to Chinese border aggression reveals the extent of Russia’s concerns that China, in time, may begin staking a claim to Russia’s lightly-populated eastern territories, and reaching out to champion Russia’s long-ignored citizens of Asian descent. Interestingly enough, the report seemed to describe Russia’s nuclear response scenarios as a last-ditch self-defense mechanism, largely targeting Chinese forces after they had entered Russian territory. And that’s grim—such a scenario suggests, at best, that Russia’s European-oriented military elites have few qualms about raining nuclear fallout on Russian citizens of Asian descent.

 

[Yingyang]

Actually China has been farming on Russian soil for years now with no issues. Yes they don't trust each other this is true. But both know they are not an issue to each other at this stage. They both also realise their more direct threat issues are the west , hence their co-operation.

 

[Citizen-21]

Does it matter though? Planning is one of the basic functions for all military high commands that is done constantly.
Everyone writes plans for anything.
U.S. military has a plan for zombie apocalypse. (though it is formally called as a rabies pandemic)

With how things are going, however, I expect Russia eventually would turn from a Western puppet-state into a total suicide nation like Ukraine, and will serve as a cannon fodder to press on China from the north. Russians and Ukrainians will be put in the same trenches, their combined combat experience would come extremely handy against a totally green Chinese army.
Have to get rid of nukes however, and Putin is diligently working on it.
So mentioned plan is useful only before that point.

When war on China break outs, China has no choice but to move very quickly against all U.S. - controlled states surrounding it's waters, with a task of destroying U.S. coalition airfields and bases as much as possible. This is doable as long as Russia stands at least neutral covering their north, preventing strategic nuclear strike on China, and becoming the only source of oil supply once naval routes are cut off.

But with Russia out of the picture as a nuclear power, and last bits of it's sovereignty destroyed, China might get the hang of what's going on and react by massive invasion on Russian territory even before war on China begins, to secure as much ground as possible on the Russian front as all that will be turned against them.