Attack on Riyadh airport killed 12 people and wounded over 300 more, Saudi authorities say

An attack on Riyadh's King Khalid International Airport on Saturday killed 12 people and wounded over 300, Saudi authorities said. The dead included four Saudi citizens, two Bangladeshi nationals, a Palestinian, a U.S. citizen, an Egyptian, a Jordanian, a Syrian and a Sudanese. Some injured were in critical condition. The attack, the latest in a week, may increase Saudi pressure on allies like the U.S. for military support.