The US military has launched a series of airstrikes on Yemen's Houthi rebels, targeting the capital, Sanaa, and the coastal city of Hodeida. The strikes come less than two days after a US strike on a Red Sea port killed at least 80 people. The Houthi rebels reported 13 airstrikes on an airport and port in Hodeida, as well as strikes in Sanaa. The US military's Central Command confirmed that it continues to conduct strikes against the Houthis in Yemen. The United Nations Secretary-General expressed concern about the attacks and called for the protection of civilians and infrastructure.