Riyadh struck Houthi military targets in Hodeida on Friday, with rebel media reporting two wounded after the Yemeni group announced a maritime blockade of the top oil producer and hit its ships.
The Houthis had threatened to blockade Saudi ports on the Red Sea -- a key route for oil shipments -- while the five-month war had already led to the effective closure of the vital Strait of Hormuz.
Yemen, one of the world's poorest countries, is still recovering from the civil war that plunged parts of the nation into famine. Here's a closer look at the renewed tensions.
