U.S. Defense Secretary Lloyd Austin on Tuesday announced the creation of a multinational operation to safeguard commerce in the Red Sea following a series of missile and drone attacks(opens in a new tab) by Yemen’s Iran-aligned Houthis.

Austin, who is on a trip to Bahrain, home to the U.S. Navy’s headquarters in the Middle East, said participating countries include the United Kingdom, Bahrain, Canada, France, Italy, Netherlands, Norway, Seychelles and Spain. He said they would conduct joint patrols in the southern Red Sea and the Gulf of Aden.

“This is an international challenge that demands collective action. Therefore today I am announcing the establishment of Operation Prosperity Guardian, an important new multinational security initiative,” Austin said in a statement early on Tuesday.