dhina's securty depends on its partnership with europe and russia. rusisa's security depends on its partnership with china and europe. there are common interests and targets. what russia has to do is to pull europe to its side.. we'll see what china's mission is later on. europe, the last stop of all commercial bridges
You are thinking real big picture....good lad.
People often also dont account for how long it will take (and investment it will take) to get deep siberian pipelines built from Russia to China.
Right now iirc, only eastern siberia has some pipelines to China.
Whereas majority of oil and gas fields are much further west...(this is why it was more economical and prudent to build these to western russia and then Europe).
This is a pretty significant window of pressure (the time it takes for this) that West has to mount pressure on Putin and his inner circle calling the shots.
The spanner in the works now on the Eurasian component of BRI is a long term issue for sure like you mention....given it is really Europe terminus by far (given developed market size for finished VA goods) that was supposed to hold up most of chinese objective and investment sunk and commited towards it.