For the US not much will change in the short or medium term because the pact was about exclusive dollar payment for energy deal. But this will open up the road for Saudis and OPEC to speed up dedollarisation and diverse their currency reserves(ruble, dollar and Yuan), they already made the steps by accepting Yuan some year ago. Russian Central back also today announced that Yuan will be the main foreign trade currency instead of the Euro and dollar. That pretty much means China has free flow access to energy, food and maybe weapons/shells if needed for a war.