More than 30 targets struck by US missiles in Yemen: Pentagon

US President Donald Trump said on Monday he would hold Iran responsible for any attacks carried out by the Houthis, after he ordered airstrikes on Yemen first on Saturday, and then again on Monday.

Monday's targets were the Red Sea port city of Hodeidah, and the Al Jawf governorate north of the capital Sanaa, according to Al Masirah TV. 

The White House said that Trump's message to Iran was to take the United States seriously.

The Pentagon said it had struck over 30 sites so far and would use overwhelming lethal force against the Houthis until the group stopped attacks.

The Houthis have maintained that their naval blockade and military operations are in response to the Israeli blockade and war on Gaza.

US Lieutenant General Alex Grynkewich, director of operations at the Joint Staff, said the latest campaign against the Houthis was different to the one under former President Joe Biden because the range of targets was broader and included senior Houthi drone experts. 

Grynkewich said dozens of Houthi members were killed in the strike. The Biden administration is not believed to have targeted senior Houthi leaders.

- with reporting from Reuters