Taliban militants have threatened and beaten United Nations staff members in Afghanistan, even as the insurgent group has attempted to portray itself as more moderate than in years past, according to an internal organization document obtained by Reuters. Reuters reported Wednesday that the U.N. document describes dozens of instances of threats and violence faced by U.N. staff members dating back to Aug. 10, just days before the Taliban captured Kabul and toppled Afghanistan’s government. One of the reported incidents involved an Afghan U.N. staff member who on Sunday was attempting to reach Kabul’s airport...