What to know

• Saudi Arabia's civil aviation body extended the suspension of operations at Riyadh's international airport Monday following a series of deadly attacks by Yemen's Iran-aligned Houthi rebels over the weekend. The statement announcing the decision did not specify...S1
• The four countries, dubbed the R4, reaffirmed solidarity with Saudi Arabia after a new attack killed one person and wounded nearly a dozen, a day after a strike that killed 13 and wounded more than 300S2