Will Houthi advances in Yemen strengthen Iran’s hand against the US?

Houthi forces have made rapid territorial gains along Yemen’s Red Sea coast in recent days, seizing the port city of Mocha and, according to multiple reports, the island of Perim (Mayun) near the Bab al‑Mandab strait. Analysts and officials say those advances could give Iran—an ally and backer of the Houthis—additional leverage in its confrontation with the United States by threatening a second major shipping choke point beyond the Strait of Hormuz. But experts caution the link between Houthi battlefield success and direct Iranian bargaining power is complex and contested.

What happened: key developments

Reports say the Houthis captured Mocha on the Red Sea coast and moved to take Perim island, which sits close to the narrowest section of the Bab al‑Mandab strait. The capture of Perim—also known as Mayun—was described as significant because the island divides the waterway and lies within a few kilometres of main shipping channels in a roughly 20km‑wide passage. Sources cite the fall of government‑held positions and a rapid Houthi advance along the western coast that included gains in districts of Taiz and Hodeidah.

Why the geography matters

The Bab al‑Mandab links the Red Sea to the Gulf of Aden and, via the Suez Canal, to Europe. About 12% of global trade typically transits the strait; for Gulf oil producers it is an alternative export route when the Strait of Hormuz is disrupted. Analysts point out that Saudi Arabia has increasingly relied on Red Sea routes—and on the East‑West (Petroline) pipeline to Yanbu—after Iranian restrictions affected Hormuz traffic. Control or effective denial of movement near Bab al‑Mandab would therefore create a second chokepoint that could amplify pressure on Gulf oil flows.

How the gains could translate into leverage for Iran

• Indirect leverage through allied action: Multiple analysts and reporting highlight that the Houthis are Iran‑aligned and have received weapons, training and technical support. Houthi control of coastal terrain or an island near the strait could enable them to threaten shipping with mines, small arms, drones or boarding operations at lower cost than long‑range strikes—measures that, even if not ordered by Tehran, can serve Iranian strategic aims.
• Market effects: Observers link recent Houthi strikes and territorial advances to higher oil prices and reduced Saudi crude exports via the Red Sea, arguing that such disruptions strengthen Iran’s negotiating position by raising the economic and political cost of continuing the conflict.
• regional signalling: Combined pressure on Hormuz and Bab al‑Mandab could be presented by Tehran as a widening of its sphere of influence and as leverage in talks with Gulf states and the United States.

Limits and important caveats

reporting and expert comment stress several constraints that prevent a simple equation—Houthi gains equal decisive Iranian leverage. Key points include:

• Not a formal chain of command: Analysts quoted in the sources describe the Houthis as a strategic partner of Iran rather than a direct proxy. They receive Iranian aid and advice but retain independent leadership, aims and local motivations.
• Operational limits: Holding territory does not automatically translate into sustained closure of shipping lanes. Laying and maintaining sea mines, sustaining anti‑ship operations and resisting international naval responses require capabilities that are not identical to holding an island or a port city.
• Political and military costs: A large military response by the US or Gulf states to the Houthi advance could broaden the conflict; conversely, inaction risks leaving a hostile force in a position to levy pressure—but neither outcome is automatic or risk‑free for Iran, the Houthis or their opponents.
• Uncertainty over command and intent: Reporting includes differing judgements about whether Tehran ordered Houthi offensives or is chiefly an enabler whose strategic interests are served when the group acts independently. Sources note that presenting the Houthis merely as an Iranian instrument risks oversimplifying their own regional ambition and decision‑making.

Immediate regional reactions and stakes

Governments tied to the Yemeni conflict and wider Gulf security have reacted with concern. Riyadh reportedly conducted air strikes against Houthi positions after the coastal gains, and international diplomatic channels—including the United Nations—expressed alarm at the potential for the fighting to spill beyond Yemen and to disrupt global energy markets. Some reporting notes that Saudi leaders sought US strikes on Houthi targets but were offered intelligence and targeting support instead.

Humanitarian and local consequences

Beyond strategic calculations, the ground offensives and seizure of urban areas have produced civilian harm. UN‑linked figures cited in the packet point to hundreds of deaths, thousands wounded, and tens of thousands displaced in recent weeks. Aid agencies and Yemen’s UN‑recognised government warned of a return to wider civil war and urged measures to prevent further escalation.

Timeline (based on the reporting)

1. Over the summer, Houthi attacks on shipping in the Red Sea intensified; the group declared a blockade on Saudi vessels.
2. In recent days, Houthi forces reportedly seized Mocha (Mokha) and pushed along the western coast toward Bab al‑Mandab; pro‑government forces retreated from some positions.
3. Perim island was reportedly taken by Houthi fighters, consolidating their proximity to a key chokepoint.
4. Saudi Arabia suspended parts of its pipeline exports after drone attacks and carried out airstrikes on Houthi positions; international concern grew over maritime security and energy market impacts.

What remains unresolved

Key unknowns include whether the Houthis will consolidate hold over Perim and coastal approaches to the Bab al‑Mandab; whether Tehran played a directing role in the operations; how far the United States and Gulf states will escalate militarily; and whether sustained disruption of Red Sea traffic will be feasible for the Houthis without provoking a robust international naval or air response. Sources disagree on whether the advances represent a decisive shift in Iran’s bargaining leverage or a more limited tactical gain that still leaves important constraints in place.

Implications for the UAE and wider Gulf

The UAE had previously begun building an airbase on Perim before its withdrawal from active involvement in the Yemen war earlier this year; sources argue that that pullback left local positions exposed. For Saudi Arabia, increased vulnerability of Red Sea export routes complicates an already fraught logistics picture and reduces options should Hormuz remain contested—raising the political and economic stakes for Gulf capitals and their external partners.

Bottom line

Houthi territorial gains on Yemen’s Red Sea coast and the seizure of Perim island increase the potential for the group—and by extension Iran’s regional network—to threaten a second major maritime chokepoint. Analysts see this as strengthening Iran’s bargaining position in its wider conflict with the United States, mainly by creating additional pressure points on global energy and trade flows. At the same time, important operational, political and command‑and‑control limitations mean those gains do not automatically convert into decisive, durable leverage. How events unfold will depend on whether the Houthis consolidate control, the scale and coordination of external responses, and whether Tehran seeks to translate the developments into formal negotiating leverage or continues a posture of deniable support.