Renewed fighting between Iran-backed Houthi rebels and Saudi-backed Yemeni government forces has cut off 800,000 people from vital UN food aid, while some frontline hospitals have admitted more than 700 war-wounded patients in a single week.
The escalation, which began in September, has devastated areas including Tais, Marib and Yemen's Red Sea coast, with more than 200,000 people displaced in recent weeks.
In Taiz, where more than 600,000 residents are dependent on humanitarian aid, including more than 200,000 children, supplies of wheat flour have almost run out. Blocked roads and ongoing clashes prevented shipments of food and essential medical supplies.
Hospitals are also running dangerously low on surgical equipment, anesthesia, oxygen and drugs. One hospital in Taiz reported that only 14 days of dialysis supplies remained. "This is the kind of situation that can quickly turn into a humanitarian disaster if aid can't move safely and reach those who need it most," warned WFP country director Al-Khadir Dallum.