Yemen Fighting Around Mokha Worsens Displacement and Constrains Aid Access, UN Says

Renewed fighting around the Yemeni port city of Mokha has intensified a humanitarian emergency already shaped by displacement, damaged infrastructure and restricted access to aid. United Nations statements issued on September 10 and 11 described rapidly changing conditions: civilians were leaving affected areas, roads were limiting the movement of emergency supplies, and operations at Mokha seaport had been suspended after significant damage.

The developments matter first because of their effect on people living near the front lines. They also matter because Mokha, sometimes rendered as Mocha, is a coastal city in Taiz governorate about 75 kilometres from the Bab al-Mandab strait. That geography gives the area strategic significance, but the immediate humanitarian story is more direct: fighting can force families from their homes, interrupt medical and food assistance, and make it harder for aid workers to reach communities already facing severe needs.

In a September 10 briefing to the UN Security Council, Special Envoy Hans Grundberg said Yemen had moved into what he called a harsh reality after warnings of a return to large-scale conflict. He said Ansar Allah, also known as the Houthi movement, had launched a major offensive that included Mokha. At the time of the briefing, Grundberg said the group had gained control of the city, but he also stressed that fighting was continuing and that the situation was fluid.

Displacement estimates are snapshots

The UN statement described a wider escalation. Fighting that began with attacks in Taiz and Hudaydah in early September had spread to Marib, al-Jawf and al-Bayda, according to the Special Envoy. The UN reported civilian deaths in several areas and said shelling of displacement sites in Marib had reportedly killed children and destroyed shelters. No comprehensive, independently verified civilian casualty total was provided in the briefing, so the available information does not support a precise death toll for the escalation.

Displacement figures require particular care because they were released as snapshots from a fast-moving situation. On September 10, Grundberg said humanitarian actors had reported more than 11,400 newly displaced households across Yemen since September 3, with the majority in Taiz and southern Hudaydah. The following day, the UN spokesperson said 18,000 households had been displaced since the start of September, with people reportedly moving toward Taiz, Aden, Lahj and Abyan.

Those numbers should not be added together. They are not separate populations; they are successive estimates covering overlapping time periods. Nor should a household figure be converted into an exact number of people without a defined household-size methodology. In response to a question on September 11, the UN spokesperson said a separate figure of displaced individuals was broadly proportionate to the household count, but did not provide a standard multiplier. The clearest conclusion is that displacement had risen sharply in a matter of days, not that a fixed number of people can be calculated from the available statements.

Aid access is under pressure

Aid access is becoming harder at the same time that need is increasing. The UN said on September 11 that humanitarian partners had 15,000 emergency kits ready for rapid response, but that road cuts had left most of them stuck in Aden. It also said Mokha seaport had sustained significant damage in the recent fighting and that operations there were suspended. That is an operational status reported on September 11, not a conclusion about every port in Yemen or all humanitarian supply routes.

The UN also raised concern over the seizure of a humanitarian common premises in Mokha by Houthi de facto authorities. According to the spokesperson, all UN personnel working there had left before the seizure and were safe and accounted for. The UN said humanitarian premises, personnel and assets must be protected, and called for safe and unimpeded access so that lifesaving assistance could reach people in need.

The port-city context should be described carefully. Mokha’s position near the southern Red Sea approaches makes it important in regional security discussions, but a reported military position in or around Mokha does not establish control of the Bab al-Mandab strait. Similarly, the suspension of Mokha’s port operations is a serious local humanitarian and logistical concern, but it should not be presented as proof that all maritime traffic or all commercial shipping in the region has stopped.

What the UN is calling for

The UN’s response has focused on civilian protection, humanitarian access and renewed efforts to contain the escalation. Grundberg said he would continue engaging Yemen’s internationally recognised government and Ansar Allah, together with regional actors, in an effort to identify possible off-ramps. The UN has also called on all parties to respect international humanitarian law, protect civilians and facilitate relief operations.

Conditions on the ground can change far more quickly than a formal briefing cycle. As of September 15, however, the verified picture is clear enough: fighting around Mokha has generated major new displacement, damaged a functioning seaport, trapped ready-to-deploy emergency supplies behind road cuts, and made humanitarian access an urgent priority.

Sources

• UN Special Envoy Hans Grundberg’s Security Council briefing, September 10
• United Nations daily press briefing, September 11

Featured image: Mokha – Taiz – The Red Sea coast of Yemen, Fuad Al-Qrize, CC BY 4.0, via Wikimedia Commons. Archive view of the Mokha coast; it does not depict the September 2026 fighting.