Understanding the Houthis: Yemen's Powerful Militant Group

The Houthis are a militant group that emerged from a years-long civil war in Yemen as the country’s most powerful political force. Their strategic location at the entrance of the Red Sea allows them to disrupt international trade.

The group, which has an estimated 20,000 fighters, represents the Zaidi branch of Shia Islam. The Houthis first began gaining mass support around the turn of the century from Shia Yemenis who were fed up with corruption and authoritarian leaders.

In 2014, the Houthis captured the Yemeni capital, Sana’a, and a year later overthrew the western-backed president, Abd-Rabbu Mansour Hadi. Hadi was forced to flee, but his allies in Saudi Arabia and the UAE launched a military campaign, also backed by the west, to drive out the Houthis.

The ensuing civil war led to an estimated 377,000 deaths and displaced 4 million people by the end of 2021. The UN brokered a 2022 truce between the warring sides in Yemen that has largely held.

As part of Iran’s “axis of resistance”, the Houthis began targeting international shipping in the Red Sea after the 7 October 2023 attack on Israel by Hamas, which triggered the Israeli military campaign in Gaza. The Houthis’ campaign in the Red Sea – a major thoroughfare for world trade – brought chaos to global supply chains.

The Houthis ceased their attacks after a US-brokered ceasefire between Israel and Hamas in October 2025.

While the US says Iran has armed, funded, and trained the Houthis, the group denies being an Iranian proxy but says they share a political affinity. On 28 March, the Houthis fired missiles at Israel, vowing to continue military operations until Israel “ceases its attacks and aggression”.