The Houthis' advance toward the Bab el-Mandeb Strait is fueled by a sprawling sanctions-evasion network spanning Iranian oil, crypto and Russia.
https://www.foxnews.com/world/irans-proxy-money-machine-houthis-built-multibillion-dollar-network-despite-us-sanctions
https://www.foxnews.com/world/irans-proxy-money-machine-houthis-built-multibillion-dollar-network-despite-us-sanctions