Yemen's Houthi rebels launched a ballistic missile at Saudi Arabia's Abha airport on Monday, hours after the Saudi-backed Yemeni government struck the runway at Houthi-held Sanaa International Airport to prevent an Iranian aircraft from landing. The Yemeni government said it targeted the runway after the Houthis arranged a direct flight from Iran — bypassing the Saudi-led coalition's longstanding airspace clearance requirements — to transport a Houthi delegation that had attended the funeral of Iranian Supreme Leader Ali Khamenei. Analysts warn the exchange of strikes risks unravelling a de facto ceasefire that has held since 2022, with one expert cautioning that continued escalation could signal a return to intense conflict and full-scale ground war in a country already devastated by over a decade of fighting.