Yemen's Houthis strike Saudi capital Riyadh for the first time

Fighting between Iran-backed Houthi rebels and Saudi Arabia continues to intensify. On Saturday morning, a fire broke out near Riyadh's main airport after Houthis said they launched missiles and drones at Saudi Arabia. On the ground in Yemen, Houthi rebels are pushing east in their fight against Saudi-backed government forces. Story by Caroline Baum.

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