Who are the Houthis and why did they attack Abu Dhabi? - The Washington Post

…The rebel movement, which formally calls itself Ansar Allah, or partisans of God, took over the Yemeni capital in 2014. The rebels' beliefs are rooted in the Zaydi branch of Shiite Islam, and they had long clashed with Yemen's internationally recognized government…
https://www.washingtonpost.com/world/2022/01/17/houthis-uae-saudi-yemen/