The World Health Organization said Monday that at least 728 people have been killed or wounded in Yemen since Aug. 24.

The Iranian-backed Houthis launched an offensive to take areas bordering the Red Sea, prompting heavy clashes and exchanges of fire with Saudi-backed government forces.

Yemen's Houthis claimed on Tuesday a wave of attacks on oil facilities and utilities in Saudi Arabia’s south.

The Houthis, who control the most populous parts of Yemen and much of the north, have been launching attacks towards Saudi Arabia since they declared a naval blockade against…