US President Donald Trump says he has ordered a “decisive” military action against Houthi rebels in Yemen, opening a new salvo against the Iran-backed group that has targeted shipping lanes in the Red Sea.

The airstrikes come a few days after the Houthis said they would resume attacks on Israeli vessels sailing in waters off Yemen in response to Israel’s blockade on Gaza.

President Donald Trump announced he ordered the U.S. military to launch "decisive and powerful military action" against the Houthis in Yemen.