Weat Coast:
China is making a lot of moves in the South China Sea in building bases on atolls around the Sprately And Paracel Islamds, where there are natural resources. An alliance with Putin would secure their 'back door' against any attack. Their development of a blue water navy and willingness to deploy it has been shown. They like the Russians are slowly professionalising their armed forces. North Korea is very much the bogey man I that area but at the moment China is supporting the regieme there.
I am not doom and gloom but a realist and America is getting to the point of not being able to simultaneously fight two major conventional conflicts at the same time.