The U.S. military denies responsibility for a blast near a UNESCO world heritage site in Yemen's capital city of Sanaa, stating that it was caused by a Houthi missile. The Houthi-run health ministry reported a dozen casualties in the incident. President Donald Trump ordered increased U.S. strikes on Yemen last month, with the aim of halting Houthi attacks on Red Sea shipping. Recent U.S. strikes have resulted in dozens of deaths, raising concerns about civilian casualties. Rights advocates have called for accountability, and three Democratic senators have written to the Pentagon chief demanding answers.