[tablespoon]

> Russia doesn't have pipelines that connect all their oil facilities to China; the facilities that do connect to China are pretty high-tech, have depended on western companies for maintenance, and don't have a lot of spare capacity.

I believe Russia is already working on building new pipelines to fix that. The Chinese also know how to build things fast, so that doesn't seem like an insurmountable problem.

> To get the oil from other regions, they'd have to rely on ships...

Is that a problem or just a small inefficiency? Because it doesn't look like a problem to me, short of an all-out war where you've got submarines attacking commercial shipping.