Yemen’s Houthi movement issued a warning on Sunday advising airlines, travellers, and airport personnel to avoid all Saudi airports. This follows a deadly attack on Riyadh’s international airport on Saturday that resulted in 12 fatalities and over 300 injuries. The attack represents the most lethal incident targeting the kingdom in over ten years and marks a significant escalation in the ongoing conflict. The fighting pits the Iran-backed Houthi rebels against the Yemeni government, which is supported by Saudi Arabia. The Houthis have previously threatened attacks on Saudi Arabian infrastructure, and this warning suggests a continued threat. The recent escalation raises concerns about regional stability and the safety of civilian infrastructure in Saudi Arabia. This incident further complicates the already complex situation in Yemen.