A policeman stands guard at a checkpoint due to security high alert following an attack at a police training center in Quetta, in Islamabad, capital of Pakistan, Oct. 25, 2016. (Xinhua/Ahmad Kamal)
A policeman stands guard at a checkpoint due to security high alert following an attack at a police training center in Quetta, in Islamabad, capital of Pakistan, Oct. 25, 2016. (Xinhua/Ahmad Kamal)