WASHINGTON (AP) — The U.S. and British militaries bombed more than a dozen sites used by the Iranian-backed Houthis in Yemen on Thursday, in a massive retaliatory strike using warship- and submarine-launched Tomahawk missiles and fighter jets, U.S. officials said. In a separate statement, U.K. Prime Minister Rishi Sunak said the Royal Air Force carried out targeted strikes against military facilities used by the Houthis. More than 20 nations are already participating in a U.S.-led maritime mission to increase ship protection in the Red Sea. Transit through the Red Sea, from the Suez Canal to the Bab el-Mandeb Strait, is a crucial shipping lane for global commerce. The decision to set up the expanded patrol operation came after three commercial vessels were struck by missiles fired by Houthis in Yemen on Dec. 3.