Insight - Families torn apart as Western girls join Islamist cause

PARIS (Reuters) - Foad, a French truck driver of Moroccan origin, travelled alone through Syria to rescue his 15-year-old sister from an Islamist group she said was holding her captive. But when they finally stood face to face, in tears, she would not leave.

Foad is convinced that his sister Nora, whom he described as an impressionable teen who loved Disney movies before leaving for Syria one afternoon in January, stayed on because she was threatened with execution by the French-speaking commander, or emir, of the group she joined.