The Yemeni group quickly expanded their target list, saying any ship affiliated with the U.S. or its allies also could face attacks, the Defense Intelligence Agency said in a recent report.
U.S. efforts against Houthis to secure Red Sea proves daunting
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"These attacks have endangered crews, damaged regional security, impeded international humanitarian relief efforts, threatened freedom of navigation, and increased the cost and transit times for commercial shipping," the DIA said in a statement.
U.S.-led mission so far fails to stop Houthi attacks on Red Sea shipping
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