Inside the Houthi Naval Force That Has Changed Global Shipping Forever

The Houthis have conducted over 350 attacks on shipping in 16 months. Here is a detailed analysis of their actual military capability and why it is harder to defeat than it appears.

The Houthi force that has been attacking commercial and military shipping in the Red Sea, Gulf of Aden, and Arabian Sea is not what most reporting describes. It is not primarily a ragged militia using improvised weapons. It is a military organization that has, over the course of a decade of conflict in Yemen, developed genuine institutional competence in specific military domains — particularly anti-ship missiles, drone warfare, and the logistics of sustained operations against a naval superior — that makes it far harder to defeat than its resource level would suggest.

The specific capabilities that Houthi forces have developed and deployed in the current campaign include: anti-ship ballistic missiles with range exceeding 1,500 kilometers and terminal guidance that allows targeting of moving vessels, a significant development from the cruise missile threats that were the primary concern in earlier phases of the Yemen conflict; Shahed-136 and locally-manufactured equivalent one-way attack drones that can be launched in large swarms that overwhelm point defense systems; and underwater drones of uncertain capability that have been observed near shipping lanes but whose effectiveness against vessel hulls has not been confirmed.

Iranian material and technical support has been essential to developing these capabilities — the missile guidance technology is Iranian-derived, the drone designs follow Iranian models, and Iranian Islamic Revolutionary Guard Corps advisors have been present in Houthi-controlled territory throughout the period of capability development. But the operation of these systems has been progressively indigenized, which is why the US-Israeli campaign against Iran has not eliminated Houthi attack capability despite degrading the supply and advisory relationships.

The operational lesson being taken from the Houthi campaign by military analysts is specific and sobering: a sub-state actor with access to modern precision-guided weapons can deny the use of international shipping lanes to global commerce at a cost that major naval powers cannot indefinitely sustain through defensive operations alone.