Explosions echoed across Saudi Arabia's capital Riyadh on October 8, prompting diplomats to shelter inside embassies, international schools to take safety precautions and some businesses to evacuate staff.Residents reported repeated blasts, while at least one international school moved children into a basement. Flights at King Khalid International Airport also faced delays and cancellations.The explosions followed renewed Houthi claims of missile attacks on Saudi Arabia.