Here's another relevant post on SN:
Block007 - Discussing Alex Gladstein’s ’Uncovering the Hidden Costs of the Petrodollar’ | The Bitcoin Journey Podcast #8614 http://thebitcoinjourney.org/e/block007-uncovering-the-hidden-costs-ofthe-petrodollar-by-alex-gladstein
And, a post from ZeroHedge:
Petrodollar Cracks: Saudi Arabia Considers Accepting Yuan For Chinese Oil Sales https://www.zerohedge.com/markets/petrodollar-cracks-saudi-arabia-considers-accepting-yuan-chinese-oil-sales
reply