You don't appear to have any understanding of U.S politics, or how the conflict in the Middle East is shaping out.
Since being burned in Iraq and Afghanistan, the U.S has decided to pull back from the Middle East and foreign policy adventurism. Both the elites and the general public, of both the GOP and the Democratic party, are now very wary of getting involved in foreign disputes over there, which is why they let Assad remain in power and ignored the active involvement of both Iran and Russia, and their numerous proxy groups, in the Syrian civil war.
Russia's bluff was not called anywhere. Trump launched a few reactive missile strikes after Bashar used chemical weapons despite being told multiple times not to do so. The missile strikes were just a weak slap on the wrist. The Washington foreign policy establishment agrees that Assad will remain in power, and this is big a win for Russia and Iran.
The Saudis and Emiratis know that the U.S is not the patron and protector it once was. Which is why they're now trying to suck up to Russia. Senile King Salman took his private jet and golden escalator to Moscow a few months ago to meet with Putin. Sadly for the pathetic Saudis, Russia isn't interested in (or even capable of) protecting them from Iran. Moreover, Iran is a much more capable and enticing geopolitical ally for Russia than the Saudis. The Saudis have a lot of cash (and even that is now increasingly running out), but nothing more. Iran, on the other hand, has a network of highly effective proxy groups all throughout the Middle East. They call the shots everywhere from Beirut to Baghdad, while the Saudis can't even control Mogadishu anymore let alone other M.E capitals.
This is a tangent from Somalia though. We're not actively aligned with Iran/Russia, but its relevant to discuss their strengths because it shows how weak the UAE and Saudi Arabia are.