The Chinese don't seem to mind cuddling up to some rather unpleasant regimes when they think it will serve their own interests.  Splendidly Conservative!  Still, I suppose it's better than simply deposing them and putting 100,000+ troops into a country.
I bet the Energy Return On Cash Invested (EROCI) of paying off repressive regimes is much higher than the EROCI of deposing those regimes.
Well, the US only overthrows regimes when they stop cooperating and accepting the money/responding to the threats.

Nothing new.

As th US is cuddled up to a rather unpleasent apartheid regime that is committing acts of terrorism as we speak. Using bombs to destroy power generation and infrastructure on down trodden civilians. Pure terrorism. Its happening in Gaza.
Yeah, but perfectly alturistic. Our support for the terrorists is not on account of oil - indeed, it is making our long term access to middle east supplies less likely by the day. Imagine if democracy spreads to SA!
That would give not only the SA royal family but all the other corrupt and despotic Arab-Oil leaders the Hershey squirts.