The Iran-backed fighters earlier took responsibility for a flurry of attacks that included firing a ballistic missile at Riyadh's King Khalid International Airport as the conflict deepens with Saudi Arabia, which backs Yemen's government. Houthi rebels claim assaults on two airports as kingdom is pulled deeper into Iran war Key points and original sources are listed below.

• The Iran-backed fighters earlier took responsibility for a flurry of attacks that included firing a ballistic missile at Riyadh's King Khalid International Airport as the conflict deepens with Saudi Arabia, which backs Yemen's government.S1

• Houthi rebels claim assaults on two airports as kingdom is pulled deeper into Iran warS2