Human Rights Watch is calling for an investigation into the U.S. bombing of an oil port on Yemen’s Red Sea coast on April 17 that killed 84 people and wounded more than 150 others. Forty-nine of the dead were port workers. Also killed were several truck drivers, two civil defense workers and workers’ family members, including three children. Human Rights Watch said the U.S. government’s decision to strike the oil facility while hundreds of workers were present shows a “callous disregard for civilians’ lives.”