Yemen war escalation risk UN warns

On August 13, 2026, UN envoy Hans Grundberg warned the Security Council that Yemen faces its most serious threat of a return to large-scale war since the 2022 truce. Military activity has intensified along frontlines, with Houthi attacks in Yemen — Marib, Yemen — Hadhramaut, Yemen — Mocha, and elsewhere causing casualties. The Houthis have also attacked commercial vessels in the Red Sea and Gulf of Aden, risking drawing Yemen into the wider US-Iran confrontation. On July 20, the Houthis declared a naval blockade on Saudi Arabia, prompting Saudi-led coalition air strikes on Yemen — Hodeidah. The Houthis claimed a drone attack on a Saudi oil refinery in Saudi Arabia — Jazan. UN humanitarian chief Tom Fletcher reported that over half of Yemen's population faces acute food insecurity, with 6 million at emergency levels. Both officials called for release of 73 detained UN personnel and de-escalation. The UK blamed the Houthis for the crisis. The conflict has stalled peace efforts and worsened the humanitarian situation.