Riyadh's King Khalid International Airport will remain closed until Oct 17 after four attacks in five days killed at least 14 people and wounded more than 300. Gulf Air has canceled all services to and from the capital for that same period. Yemen's Ansarallah movement has designated all Saudi airports as legitimate targets, except for those serving Mecca and Medina, as part of an "airport for airport" retaliation strategy.
