Boy with two kneeling men in back of head in new propaganda ISIS uses . Both men say they are informants for the Russian intelligence service . The boy has been identified as male in prior propaganda . Human Rights Watch says rebels in Syria have been using child soldiers as young as 15 .
Boy with two kneeling men in back of head in new propaganda ISIS uses . The boy has been identified as male in prior propaganda . Human Rights Watch says rebels in Syria have been using child soldiers as young as 15 .