President Trump said he would hold Iran responsible for any future attacks by the Houthis in Yemen after the U.S. launched strikes against the U.S.-designated terrorist group.

Iran backed Houthi rebels have claimed responsibility for a second attack on U.S. warships in the Red Sea. The group says this is in response to U.S. airstrikes in Yemen and have vowed to continue the maritime operations until the Gaza blockade is lifted.

Yemen’s Houthi rebels have vowed retaliation against the United States after President Donald Trump authorized airstrikes to curtail their movements.