The Taliban on Friday called for Prince Harry to face trial for war crimes after he bragged about killing 25 troops in Afghanistan — which former UK military leaders fear could “incite” assassination attempts. The fundamentalist group’s interior minister, Anas Haqqani, insisted on Twitter that leaked sections of the exiled royal’s memoir, “Spare,” were akin to him confessing to “war crimes.” “Mr. Harry! The ones you killed were not chess pieces, they were humans; they had families who were waiting for their return,” Haqqani wrote of the 25 Taliban troops Harry confessed to killing in a 2012 tour of Afghanistan....