‘The Assads ruled brutally for half a century. Then suddenly they were gone’

In a prison for suspected Isis members in northeast Syria Zakaria Mohammed Ismail, in his 50s, says he stays sane by thinking about his family. Photograph: Sally Hayden.
In a prison for suspected Isis members in northeast Syria Zakaria Mohammed Ismail, in his 50s, says he stays sane by thinking about his family. Photograph: Sally Hayden.