From: https://en.wikipedia.org/wiki/Saudi_Arabia%E2%80%93United_St...
I doubt SA will give up US protection so they might just want to renegotiate terms.
Since January 2020 the US has printed nearly 80% of all US dollars in existence. $4 trillion at the start of 2020, October 2021 $20 trillion.
The petrodollar is dead. Therefore, send not to know for whom the bell tolls. It tolls for thee.
After Ukraine there's serious doubt on the able part.
There's also the problem of SA fighting russian supported forces in Yemen.
As for SA, their army is even more corrupt and incompetent then russias, if US pulls out we might see them toppled or invaded easily. (regime change might be a good thing though)
You're also fast to proclaim petrodollar dead... everyone printed as much as the US or more.
And the moment that happens I think history books will use as the marker for a new era.