A bit late to respond, but I would start with the wikipedia article which is short but gives a decent overview. https://en.wikipedia.org/wiki/Petrodollar_recyc

A bit late to respond, but I would start with the wikipedia article which is short but gives a decent overview. https://en.wikipedia.org/wiki/Petrodollar_recycling https://en.wikipedia.org/wiki/Petrodollar_recycling The petrodollar warfare section is worthy of note.