I assume that the Iranians have been running guns to the Houthis and will pass on any Russian equipment (like food and medical supplies) that the Americans specialise in destroying?

Seems likely from my worms-eye perspective .. nevermind guns etc., think missiles. There are of course other proxies, like Hezbollah and Iraqi Resistance contributing, most likely. It appears that Russia and China have broken their main diplomatic ties with Israhell, especially and since (ref RF) recently hosting of the Arab delegations in Moscow (with Gaza genocide being the main topic on the agenda). My tuppence ..