That great, so the US, which produces all the oil it needs within its borders, needs to be present in the Middle East, but China, which produces some oil, but not enough to run its current fleet of cars and trucks, let alone fight a war, does not need to be in the Middle East. Interesting analysis :)
Note that Russia's oil does not help China here: the infrastructure in Russia only allows export via European ports, not Asian ports and not over the Russia-China border, though with the construction of a few 5,000-km-long pipelines, I guess that could change in a few years if Russia cares enough.
US isn't in Middle East to protect their oil sources in case of war. US is in Middle East to control oil prices, do policing, help Israel and threat Iran and other regional actors.
I believe Russia and China signed agreements for building gas and oil pipes.
Interesting. From the second link: "Russia currently sends gas to China through the Power of Siberia 1 pipeline, which began operating in 2019 and runs through eastern Siberia into northeast China. Experts say that as China is not expected to need additional gas supply until after 2030, Beijing could drive a hard bargain on price for a second pipeline via Siberia."
Note that Russia's oil does not help China here: the infrastructure in Russia only allows export via European ports, not Asian ports and not over the Russia-China border, though with the construction of a few 5,000-km-long pipelines, I guess that could change in a few years if Russia cares enough.