Two straight days of attacks have hit military targets in response to rising attacks on Red Sea shipping, which the Houthis linked to the war between Israel and Hamas.
Attacks on two dozen ships since November are forcing shipping lines to figure out whether and when to skip the Suez Canal and send vessels on longer voyages around Africa.
Global energy prices jumped as tensions escalated around the vital shipping route, where drone and missile assaults have prompted some companies to halt sending cargos.