Well, maybe they could intervene by kicking US troops out of their soil, not allowing anyone to utilize their airspace for any military operations, and blocking all trade with Israel.
I agree, but it takes some time. Everyone basically shat on Turks too, and in the end, they slam-dunked Israel the hardest economically so far.
Also, you had Saudis basically quietly agreeing and following a ceasefire between their proxies and Ansarallah in Yemen, brokered by China, which in fact allowed Houthis to be able to focus on asymmetric warfare against Israel and the West, dealing them one of the hardest military and geostrategic humiliations and defeats in history (via Iranian intel & drones).
Also, they firmly denied ever helping the US intercept those missiles, this could just be some cope and some psyop in desperation by the US.
IMHO, Saudis are playing a long game here, they are not going against Iran nor the US at the time, as both of them could basically blow up their oil fields and disrupt their revenues and economy. However, indirectly, they are already in SCO, BRICS, selling oil in yuan, selling US bonds, etc. Case in point, they are not attacking Iranian missiles flying over their territory, nor are they targeting the US military hardware similarly using it.
As for the US bases, they are probably already signed in a long-term deal so you can't throw them out that easily. Also, they are still dependent basically on the US for maintaining their military equipment and buying new at least in the short term, until China can fully assume that position.
Edit: To illustrate this, why the heck would Iranian and Saudi officials meet so often nowadays if they are still as hostile as before China brokered that deal? Why would Iran be comfortable saying something like this if they already don't have some secret new consensus with the Saudis?
