UNAIDS, under fire over a mishandled sexual assault investigation, suffers from “a broken organizational culture,” where leaders fail “to accept responsibility” and fear among staff is rampant, an expert report said Friday. The Independent Expert Report was created by UNAIDS’ oversight body following a public uproar triggered by the agency’s handling of sexual assault allegations against former deputy executive director Luiz Loures. The findings, based on dozens of interviews and hundreds of staff surveys, said the agency tasked with coordinating the global response to the HIV/AIDS epidemic is led by a secretariat engulfed in “a crisis which threatens its vital...