Yemen’s fragile truce faces its biggest test in years after Houthi strikes on Saudi Arabia followed airstrikes linked to an Iranian flight dispute, raising fears that regional tensions could reignite the country’s long-running conflict

A timeline of the conflict as new air strikes hit Sanaa's international airport

The last several years have seen a de-escalation between Yemen's Houthis and Saudi Arabia. However, the Houthis appear intent on returning to the conflict.