Europe How can we prevent the next 'Jihadi John'? (+video)

Jihadi John: What causes people to embrace violence in the name of religion and how can those patterns of thought be found and stopped?

AP/File

The Islamic State fighter who first appeared in the video of the beheading of journalist James Foley last August was formerly known only as ‘Jihadi John’, but Thursday he was revealed to be Mohammed Emwazi, a British citizen.