Houthis take Greater and Lesser Hanish and tighten the Red Sea gate

Houthi officials said on 14 September that their forces had taken Greater Hanish and Lesser Hanish in the southern Red Sea. The islands lie about 160 kilometres north of Bab al-Mandab, the gate between the Red Sea and the Gulf of Aden. The seizure follows the capture of Mokha on the Yemeni coast and of Mayun, also called Perim, in the strait itself. Saudi-backed government units were trying to claw back ground around that gate when the Hanish announcement landed.

The geography is the leverage. Iran's closure of the Strait of Hormuz at the start of the present war pushed Saudi crude toward Yanbu and out through Bab al-Mandab. The East-West pipeline that feeds Yanbu is already offline after last week's drone hits, with regional officials telling reporters repairs could take three to five weeks. Houthi strikes on King Khalid Air Base were claimed in the same window. Greater and Lesser Hanish add two pieces of dry land from which small boats, drones and anti-ship missiles can watch the lane that was supposed to be the Hormuz bypass.

The group is also closer to foreign bases on the African side. Djibouti, 32 kilometres across the water from the strait, hosts American, Chinese, French and Japanese facilities. Control of Mayun plus the Hanish pair does not give the Houthis a navy. It gives them more places to hide launchers and more coastline to deny.

Monday's fighting inside Yemen was not only islands. Houthi missiles and drones wounded 13 civilians, according to accounts carried with the island reports. Air alerts have been routine in Saudi cities. The Presidential Leadership Council still holds Taiz and Marib in name while the front toward both cities is active. Island seizures are easier to announce than those cities are to take. They also matter more to tanker rates.

Brent had already moved above $107 after the pipeline hits and the Mayun capture. A second island pair does not add a new chokepoint so much as it lengthens the one that exists. Insurers price that length. So do the navies that have been escorting or avoiding the lane for two years.

The Houthi claim should be read as a battlefield report from one side. Independent confirmation of flags on both islands was thin on Monday beyond the group's own statement and officials speaking to AP and Reuters. The pattern around Mokha and Mayun makes the claim plausible. Plausible is not the same as surveyed. Satellite revisits in the next days will show whether the PLC still has a foothold on either island.

For Riyadh the operational problem is stacked: a shut East-West line, a hostile force on the Red Sea islands that sit on the remaining export path, and an American administration that has not offered the extra cover Saudi officials asked for. For shipowners the problem is simpler. The alternative to Hormuz now has Houthi positions at the mouth and along the first 160 kilometres of the Red Sea. That is the map as of 14 September, subject to what a camera sees on Hanish at first light.