Yemen's internationally recognised government is fighting the Houthis, a movement backed by Iran, for control of the country. Saudi Arabia backs the government with an air campaign that has reportedly included hundreds of strikes on Houthi-held areas, including the capital Sanaa. The Houthis answered by declaring Saudi airspace a zone of military operations.
On Saturday 10 October the Houthis struck King Khalid International Airport in Riyadh. Saudi Arabia's General Authority of Civil Aviation said at least 12 people were killed and at least 309 wounded. The dead included four Saudis, two Bangladeshis, and one person each from the US, Jordan, Palestine, Syria, Sudan and Egypt. It was the third Houthi attack on the airport that week, and the Saudi-led coalition called it a war crime.
The attacks have not stopped. Saudi Arabia reported a new barrage of drones and missiles on 12 October, and Riyadh airport remains shut. Reuters reported that Saudi Arabia stopped issuing public warnings of imminent attacks days before the weekend strikes and has not explained why. Iran says it is ready to help facilitate dialogue between the Houthis and Saudi Arabia.
The war may widen. President Trump says he is considering joining the Saudi-led offensive, which aims to push the Houthis from Yemen's Red Sea coast and the Bab al-Mandab Strait. A Houthi leader warned that the United States would face a swift and painful response if it does. The UN says more than 217,000 people have been displaced since fighting escalated on Yemen's west coast.