> Pricing oil in Yuan because, I guess, the US is somehow not protecting the UAE doesn't make sense because China won't be there to protect them either.
It is an admission that US protection was always a paper tiger. Perhaps in the 1960s it meant something, but Iran has shattered the illusion that Washington has any credible defense of the country.
> The US can just say, well fine you can sell your oil in Yuan. But we'll just blockade the Straight and seize oil priced in Yuan or something.
The UAE primarily sells its oil to China, which is its largest export partner, followed by countries like India and Japan. the United States cannot do this without not only obliterating energy markets for an ally, but strengthening alliances between china and india. It is likely that should the US attempt such a move, China would respond with retaliatory technology tariffs and a reduction of agricultural trade.
> Who exactly does the UAE need protection from? Iran? China's ally?
the UAE did not "need protection" from any regional military threat until the United States used regional peace talks as cover to launch a surprise attack against Iran. the UAE would still likely be an OPEC member state had the US not unilaterally chosen to obliterate global energy markets for no consistent or clearly defined reason.
> there's just never any follow-up or perhaps imagination that the US could just do something too.
This conflict was well defined as geopolitical suicide for nearly forty years; its what kept the peace. All simulations and tabletop exercises predicted such an incursion would send global energy markets into panic, trade markets into recession, and produce no meaningful advancement of either regional security or regime change. Iran is backed by powerful allies and has shown numerous times it can meet each US escalation with yet more regional attacks. We have tried escalation and failed, burned through a decade of advanced missiles fighting cheap drones, and have no defined objective politically or militarily for this conflict.