Yemeni fighters from the Houthi movement said they will block Saudi Arabia’s coast starting Monday. Their spokesman, Yahya Saree, described it as maritime strike. Cargo vessels moving through the Red Sea near Saudi ports could face delays. U.S. warplanes persisted in attacking objectives after their warning. The group captured several ships. Insurers now see Red Sea routes as risky. Traders are watching closely, watching for additional charges or rerouted cargo. Saudi ports border the risk area, so any carries swift impact.