Saudi Arabia said on Friday that three people were killed including a pilot, in attacks on Riyadh’s international airport, after Yemen’s Houthis claimed a series of attacks targeting the facility. The conflict between the Houthis and Yemen’s Saudi-backed government has widened, with the Iran-backed fighters repeatedly attacking Saudi targets since they began a lightning offensive just across the border. While seizing large swathes of territory along the Red Sea coast in Yemen, the Houthis have...