About 25,000 foreign fighters from more than 100 countries are estimated to have joined Islamic State (IS, formerly ISIS). RT met the family of a young Russian man thought to have become an IS recruit while on holiday with his wife and daughter.
According to the parents their son was acting normally, he was polite and kind. But two years ago they got a new Imam, after that he started changing.
It is not the first time when young people in Russia become radicalized by ISIS.
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