WEST PALM BEACH, Fla. (AP) — President Donald Trump said he ordered a series of airstrikes on the Houthi-held areas in Yemen on Saturday, promising to use “overwhelming lethal force” until the Iran-backed rebels cease their attacks on shipping along a vital maritime corridor. The Houthis said at least 31 people were killed, and Trump’s national security adviser said Sunday that the strikes had successfully targeted “multiple” Houthi leaders.

“Our brave Warfighters are right now carrying out aerial attacks on the terrorists’ bases, leaders, and missile defenses to protect American shipping, air, and naval assets, and to restore Navigational Freedom,” Trump said in a social media post. “No terrorist force will stop American commercial and naval vessels from freely sailing the Waterways of the World.”