Yemen’s Bab al-Mandab War: How the Houthis Turned Saudi Arabia’s Oil Escape Route Into a Second Front

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Houthi forces have captured the strategic Yemeni port of Mokha and the volcanic island of Mayyun, effectively placing the southern Red Sea within the wider Iranian-backed conflict zone. This decisive territorial shift directly threatens the critical Bab al-Mandab strait, exposing the strategic failure of Saudi Arabia's eleven-year military intervention in Yemen.

Control over Mayyun’s 1,800-metre runway allows the insurgent group to project power across the narrow eastern channel of the strait. Maritime transit routes are now highly vulnerable. By securing these critical maritime choke points, the militants have compromised Saudi Arabia's primary oil export escape route and established a potent second front. This geographic consolidation enables the group to disrupt international shipping lanes and challenge Western naval coalitions operating in the region. Consequently, the balance of power in the Bab al-Mandab has shifted, leaving global energy flows exposed to persistent drone and missile threats from the Yemeni mainland.

Comment

The Houthi seizure of Mayyun Island and Mokha alters the maritime geography of the southern Red Sea by establishing land-based oversight. This physical presence on Mayyun allows the deployment of short-range anti-ship missiles, bypassing the limitations of targeting from the Yemeni highlands. Consequently, the Bab al-Mandab is transformed into a highly contested chokepoint where commercial shipping is subject to localized interdiction.

This operational reality mirrors the British fortification of Perim Island during the First World War to deny Ottoman forces Red Sea access. Just as the Royal Navy utilized the island to control maritime access, the militarisation of Mayyun by Houthi forces establishes a persistent anti-access envelope. Ultimately, this local dominance neutralises the traditional blue-water naval superiority of Western coalitions, such as Operation Prosperity Guardian, in the Bab al-Mandab.

Strategic Question for Discussion

If Houthi forces successfully consolidate their anti-access envelope on Mayyun Island, how can Operation Prosperity Guardian adapt its maritime security doctrine when traditional blue-water power projection is neutralised by localized, land-based interdiction?

The trajectory indicates that Western coalitions will be forced to shift from passive escort missions to active, pre-emptive land strikes against Houthi launch sites on Mayyun Island. However, such an escalation risks widening the conflict and straining diplomatic relations with regional partners who favour containment over direct confrontation. My assessment is that this geographic shift will ultimately compel a reliance on alternative, longer maritime routes that bypass the Bab al-Mandab entirely.

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