> an explainer of how many different proxy forces are involved in Yemen

RealLifeLore has been doing a decent job covering it [1].

The broad summary is you have the Saudi-backed unity government, the Iranian-backed Houthis, who claim all of Yemen but practically want North Yemen, and the UAE-backed STC, who also claim all of Yemen but practically want South Yemen. Emiratis bring the Israelis to the party. The Iranians bring the Russians. The Saudis bring various international elements (I know less about them than the Houthis and STC).

[1] https://m.youtube.com/watch?v=IgD7zmJN3_A&pp=0gcJCVACo7VqN5t...