Iranian-backed fighters have swept control of the Red Sea's most vital chokepoint, giving Tehran a second maritime lever over global trade to sit alongside the one it already holds at the Strait of Hormuz.
Intelligence Lead
Yemen's Houthi movement has seized effective control of the Bab al-Mandab Strait, the Red Sea chokepoint through which Saudi Arabia has routed the bulk of its crude exports since Iran closed the Strait of Hormuz earlier in the 2026 Iran war. Confirmed reporting shows Houthi forces capturing the port city of Mokha and pushing onto the Hanish Islands, then declaring a blockade against Saudi-flagged shipping. The seizure hands Iran a second global chokepoint at the exact moment Riyadh had come to depend on the first one remaining open, and it does so with Washington so far declining to intervene.
Situation Report
Houthi fighters launched a rapid offensive along Yemen's Red Sea coastline beginning in early September, capturing the historic port of Mokha and advancing troops onto the Hanish Islands in the middle of the Red Sea, according to reporting confirmed by NBC News, the Washington Post, and Al Jazeera. The group has since declared the strait closed to Saudi-flagged vessels and announced a blockade targeting Saudi Arabian shipping specifically, giving Iran's principal regional proxy direct control over a waterway it had long threatened but never fully held.
The timing compounds an existing vulnerability. Iran's earlier closure of the Strait of Hormuz forced Saudi Arabia to shift the large majority of its seaborne crude exports to the Red Sea route; Saudi exports through Bab al-Mandab ran roughly eight times higher between March and mid-July 2026 than over the same period a year earlier, per Washington Post reporting citing shipping data. That rerouted volume now transits a strait under the practical control of a Houthi force still assessed by US and allied intelligence services as materially supported by Tehran.
Al Jazeera reports that Washington has so far shown little appetite to intervene militarily to reopen the strait, a posture consistent with the broader US approach to the Iran war, which has favored economic and diplomatic pressure over direct confrontation with Iran-aligned proxies. No US or coalition naval operation to contest Houthi control has been confirmed as of this writing.
Background & Context
Bab al-Mandab has carried a fraction of Hormuz's historical shipping volume, but its strategic weight rose sharply once Hormuz closed, since it became the only remaining maritime route for Gulf crude reaching European and Western markets without a lengthy diversion around the Cape of Good Hope. The Houthis have targeted shipping in the southern Red Sea intermittently since 2023, but earlier campaigns relied on missile and drone strikes against transiting vessels rather than territorial control of the strait's chokepoint itself.
This offensive is different in kind. Physical capture of Mokha and the Hanish Islands gives Houthi forces persistent positional control rather than episodic strike capability, a shift that converts an harassment campaign into something closer to a blockade authority. It arrives as part of the wider Yemeni offensive tied to the 2026 Iran war, in which Iran-aligned forces have opened or reopened fronts across the Gulf and Red Sea in step with the broader confrontation between Washington and Tehran.
Analysis & Assessment
It is assessed with high confidence that Iran now holds functional leverage over both of the region's principal maritime chokepoints simultaneously, a position without recent precedent in the conflict. This is a deliberate escalation of Tehran's war of economic attrition against Washington and Riyadh, not an incidental byproduct of Yemen's civil war: Bab al-Mandab's rise as the substitute route for Saudi crude made it a logical second target the moment Hormuz closed.
The muted US response, read against Al Jazeera's characterization of Washington watching from the sidelines, is assessed as a signal that the administration continues to prioritize economic and diplomatic tracks over expanding direct military engagement against Iran-aligned proxies. That restraint carries risk: absent a naval response, Saudi Arabia's remaining export flexibility narrows sharply, strengthening Tehran's hand heading into this week's UN General Assembly diplomacy and any prospective contact between Washington and Tehran.