Director 'Of Fathers and Sons' says film captures 'a nightmare' Syrian director, Talal Derki, says he is still haunted by several scenes in his film which focuses on the gradual radicalization of children in Syria. "I call it the nightmare. I captured a nightmare in this film" says Derki. The Sundance award-winning documentary "Of fathers and sons" is the result of two years spent with an Islamist family in a war-ravaged region bordering Turkey. IMAGES AND SOUNDBITES