The United States has carried out near daily strikes against the Houthis, who control the most populous parts of Yemen and have said their attacks on shipping are in solidarity with Palestinians as Israel strikes Gaza.
The Houthis began their attacks in mid-November after Iran’s Supreme Leader Ali Khamenei urged Muslim nations to blockade Israel. Initially they claimed to be targeting vessels bound for Israeli ports but after weeks of drone and missile attacks it appears that Houthis fire at any ship they can.
The strikes have so far failed to halt the Houthis' missile and drone attacks, which have upset global trade and raised shipping rates.
A joint statement from countries that either took part in the strikes or provided support, said the military action was against 18 Houthi targets across eight locations in Yemen including underground weapons and missile storage facilities, air defense systems, radars and a helicopter.
US Defense Secretary Lloyd Austin said the strikes were meant "to further disrupt and degrade the capabilities of the Iranian-backed Houthi militia."
"We will continue to make clear to the Houthis that they will bear the consequences if they do not stop their illegal attacks, which harm Middle Eastern economies, cause environmental damage and disrupt the delivery of humanitarian aid to Yemen and other countries," Austin said.