What to know

• At least 12 people were killed and hundreds wounded when Yemen’s Houthi militants struck Riyadh’s international airport with a missile on Saturday, in Saudi Arabia’s deadliest attack in more than a decade. It was the third missile strike this week on the King...S1
• The U.S. has stopped short of direct military support against the Houthis in Yemen, but President Donald Trump is weighing joining strikes on the Iranian-backed rebels.S2