How legally binding is the oil for dollars + protection deal that USA made with the Saudis in the 70s? Can SA just partially break it?

The world is changing and so many people are oblivious to it.

If this is true, it really is the end of Bretton Woods 2. A lot of the petrodollar commentary I've listened to seems to imply that we went to war over ensuring oil was sold for dollars. If that's in fact the case, what happens now? War with who?

Here's the paywall free link: https://archive.ph/pD9A0

“The oil market, and by extension the entire global commodities market, is the insurance policy of the status of the dollar as reserve currency,” said economist Gal Luft, co-director of the Washington-based Institute for the Analysis of Global Security who co-wrote a book about de-dollarization. “If that block is taken out of the wall, the wall will begin to collapse.”

This dude wrote a book on de-dollarization but kind of scary to think about what the US will do in such circumstances.

[This would be] a move that would dent the U.S. dollar’s dominance of the global petroleum market and mark another shift by the world’s top crude exporter toward Asia.

The Saudis are angry over the U.S.’s lack of support for their intervention in the Yemen civil war, and over the Biden administration’s attempt to strike a deal with Iran over its nuclear program.

China buys more than 25% of the oil that Saudi Arabia exports. If priced in yuan, those sales would boost the standing of China’s currency.