The U.S. and United Kingdom conducted another round of large-scale air and missile strikes on Houthi militant targets across Yemen on Monday, according to the Pentagon.

U.S. and U.K. military took “proportionate and necessary strikes” against eight Houthi targets in Yemen, including an underground storage site and locations associated with the rebel group’s missile and air surveillance capabilities, according to a joint statement.  

The bombings — supported by U.S. allies Australia, Bahrain, Canada and the Netherlands — mark an increase in action against the Houthis, who have vowed to continue attacks on ships in the Red Sea in protest of Israel’s military campaign in the Gaza Strip. 

Washington has launched multiple rounds of preemptive strikes against Houthi sites in the past month, beginning Jan. 11, but has failed to stop the group from continued drone and missile attacks on commercial vessels in the waterway.  

“These precision strikes are intended to disrupt and degrade the capabilities that the Houthis use to threaten global trade and the lives of innocent mariners, and are in response to a series of illegal, dangerous, and destabilizing Houthi actions since our coalition strikes on January 11,” according to the statement.  

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