Suspected US airstrikes targeted Houthi-controlled areas in Yemen, including residential areas in the capital, Sanaa. The extent of the damage and casualties is unknown, but the strikes appeared more intense than previous days. The US has expanded its targets to high-ranking personnel and urban areas. The air campaign was launched after the Houthis threatened to resume attacks on 'Israeli' ships. The recent escalation comes as the Houthis seek to bolster their regional influence amid Yemen's prolonged conflict.