Yemen is experiencing a significant escalation in its protracted humanitarian crisis following the Houthi offensive launched on 3 September 2026 along the West Coast and in Ta’iz. Fighting has since spread across several governorates, including Al Hodeidah, Ta’iz, Lahj and Aden, involving ground fighting, drone and missile attacks, and Saudi-supported airstrikes. The escalation has caused substantial civilian casualties, damaged infrastructure and disrupted key transport and supply routes. The humanitarian impact has been severe. More than 300,000 people have been displaced since the escalation, with many families displaced repeatedly. Aden has become one of the main receiving areas, hosting more than 56,000 newly displaced people, many of whom are staying with host communities rather than in formal displacement sites. This is increasing pressure on already vulnerable households and overstretched basic services. Displaced and conflict-affected families face urgent needs for food, safe drinking water, shelter, healthcare, sanitation and protection. Food insecurity has deteriorated sharply in government-controlled areas, where a large majority of households are unable to meet their minimum food needs. Rising food and fuel prices are further reducing household purchasing power. At the same time, inadequate shelter, overcrowding and pressure on water and sanitation services are increasing health risks, including cholera. The escalation is placing additional pressure on an already weakened humanitarian response. Access restrictions, damaged roads, insecurity and checkpoints are delaying the movement of humanitarian personnel and supplies. Existing assistance has not kept pace with the scale of new displacement, particularly for shelter, WASH and food assistance. Newly displaced families living outside formal sites are also more difficult to identify and reach.