Houthi insurgency
The Houthi insurgency, also known as the Sa'dah Wars, was a military rebellion pitting Zaidi Shia Houthis that began in northern Yemen and has since escalated into a full-scale civil war. The conflict was sparked in 2004 by the government's attempt to arrest Hussein al-Houthi, a Zaidi religious leader of the Houthis and a former parliamentarian on whose head the government had placed a $55,000 bounty.