Saudi air defences on Sunday intercepted a ballistic missile fired by Yemeni rebels at the kingdom’s southern border city of Najran, which set a farm ablaze, state media said. “Saudi forces were able to intercept (the missile),” the Saudi Press Agency said, citing the Saudi-led coalition fighting Iran-backed Huthi rebels. The missile was launched from Saada, the Huthi stronghold in northern Yemen, the coalition was cited as saying.