Tensions are escalating between Houthi forces in Yemen and Saudi Arabia, testing a four-year truce. On Monday, the Houthis, who are aligned with Iran, fired missiles at Saudi Arabia’s international airport in Abha. Earlier in the day, the Houthis accused Saudi Arabia of bombing the international airport in the Yemeni capital of Sana’a. The Saudi-backed Yemeni government took responsibility for bombing the airport in Sana’a, saying it was done to prevent an Iranian aircraft from landing.