Yemen’s Houthis threaten escalation after American strike using 5000-pound bunker-buster bomb CBS NewsRed Sea tensions: Yemen’s Houthis ‘attack’ US carrier after deadly strikes Al Jazeera EnglishHouthi rebels say at least 16 killed and 42 others wounded in joint US-British airstrikes in Yemen Yahoo! VoicesJoint U.S.-British attack kills at least 16 in Yemen; Houthis claim attack on carrier The Washington PostPentagon chief extends deployment of aircraft carrier, ships in the Red Sea as Houthi attacks go on 13newsnow.com WVEC