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.

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.

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

The renewed fighting in Yemen is testing one of Iran's most valuable regional partnerships just as Tehran scrambles to preserve its remaining leverage.