A US drone strike has killed the mastermind responsible for the 2014 attack on a Pakistani school resulting in the death of 150 people, The Associated Press reported. A US Army general confirmed the death of Taliban leader Khalifa Umar Mansoor in a phone call to Pakistan’s army chief Raheel Sharif, Pakistan army spokesman Asim Bajwa said. No information was given on where or when the drone strike took place. Pakistani media reported a drone strike in eastern Afghanistan earlier this week, saying it killed several militants. Mansoor, also known as Umar Naray and Khalid Khurasani, had claimed responsibility for training and dispatching a Taliban suicide squad to the school in Peshawar, the...