United Nations Special Envoy for Yemen Hans Grundberg on Sunday, 11 October condemned escalating Houthi attacks on civilian infrastructure in Saudi Arabia, warning that the strikes risk destabilising regional security and deepening the stalemate in Yemen's decade-long conflict. The condemnation came in a statement posted on social media platform X.

The Attack on King Khalid International Airport

Grundberg specifically cited Saturday's strike on King Khalid International Airport in Riyadh, which killed 12 people and injured more than 300, according to Saudi authorities. The envoy noted that this assault followed earlier attacks this week on airports in Riyadh and the southwestern Saudi city of Abha, both of which also resulted in civilian casualties.

Grundberg's Warning

'These attacks represent a grave escalation,' Grundberg stated, adding that such actions 'pose a serious threat to regional security, perpetuate cycles of violence and complicate even more peace efforts for Yemen.' He renewed his call on the Houthis to immediately cease the attacks and stressed the obligation to respect international humanitarian law, including the prohibition on directing strikes against civilians and civilian infrastructure.

Military Confrontation Intensifies

Grundberg's remarks came as combat escalated on both sides of the Yemen-Saudi border. A military source said on Sunday that airstrikes against Houthi-held areas have grown more intense, with heavy strikes targeting zones in southwestern Taiz province and other parts of Yemen. Fighting has also sharpened in southwestern Yemen, particularly near the strategically critical Bab al-Mandeb Strait, where Yemeni government forces backed by the Saudi-led coalition are engaged in active combat with Houthi fighters.

Background: Yemen's Long-Running Conflict

Yemen has been mired in civil war since late 2014, when the Houthis seized the capital Sanaa and much of northern Yemen. A Saudi-led coalition intervened in 2015 in support of the internationally recognised Yemeni government, which is now based in the southern port city of Aden. Repeated international mediation efforts — including multiple UN-brokered ceasefires — have so far failed to produce a durable political settlement, leaving millions of civilians trapped in what the UN has described as one of the world's worst humanitarian crises.

What Happens Next

The latest escalation threatens to further erode the fragile diplomatic space that Grundberg's office has been working to preserve. With civilian airports now repeatedly targeted and coalition airstrikes intensifying across Yemen, analysts warn that any near-term return to negotiations will require, at minimum, a mutual de-escalation on the ground. The situation at the Bab al-Mandeb Strait — a global shipping chokepoint — adds a significant international dimension to what remains, at its core, a protracted regional proxy conflict.