Yemen’s Houthi rebels are stepping up their missile attacks, keeping up what could be the last major front in the Middle East wars.

The US military fired multiple strikes against the Houthi rebels in Yemen, the latest escalation against the Iran-backed terror group plaguing the Red Sea.

Yemen warns the US and Israel of severe consequences for military actions, escalating strikes while supporting Palestine.- Watch Video on English Oneindia

The U.S. has been targeting Houthi facilities in Yemen and has long carried out military activities in the country.

The targets struck by U.S. forces had been used to attack American warships and commercial vessels, officials said.

The Houthis, who are backed by Iran, have targeted commercial ships in the Red Sea in solidarity with Hamas in Gaza. They launched a missile at Israel overnight.

The latest round of strikes occurred as the United States and its ally Israel struggle to halt a campaign of regional assaults by Yemen’s Houthi militants.

The U.S. has launched airstrikes against Houthi targets in Yemen over the past two days. U.S. Central Command said the U.S. conducted multiple "precision strikes" that hit Houthi targets that the Houthis used to attack American vessels.

ADEN, Yemen − Yemen's Houthi spokesperson Mohammed Abdulsalam said that the country would continue to defend itself after several U.S. strikes targeted facilities in the capital Sanaa on Tuesday. The U.S. military said that it carried out strikes against Houthi targets in Sanaa and coastal locations in Yemen on Monday and Tuesday.

Air raid sirens sounded in Tel Aviv Monday after reports of a missile launch from Yemen, sending residents running for shelter.

The targets struck by U.S. forces had been used to attack American warships and commercial vessels, officials said.