You may heard about the evidence of Saudi [involvement](https://en.wikipedia.org/wiki/Alleged_Saudi_role_in_the_September_11_attacks) in 9/11 somewhere?

Then there was that contract the US gov. had with Saudis to trade oil only in petrodollars which has recently expired and the Saudis won't sign it again 👏🏻

https://mises.org/mises-wire/saudi-arabia-drifts-away-washington-and-dollar

There are other things Saudis want from US, like nuclear program and stuff which US is hesitating to give.

https://www.csis.org/analysis/saudi-request-us-nuclear-cooperation-and-its-geopolitical-quandaries

I'm not knowledgeable about the geopolitics but peaces here and there gove me questions like, "Is that why?"