Yemen's Houthi rebels say the U.S. military has launched a series of airstrikes on the capital, Sanaa, and a rebel-held coastal city.

The US says the attack on the Red Sea coast aimed to restrict supplies and funds for the Houthis, who called it a war crime.

US military says aim of strikes, some of the deadliest since start of bombing campaign, was 'to eliminate this source of fuel... and deprive illegal revenue' to Iran-backed rebels