article_snippet: Mohammed Emwazi, who was unmasked as Islamic State's cold-blooded executioner last week, was a member of a terror cell that was known to have links to the failed July 21, 2005 attacks on London.
article_snippet: Mohammed Emwazi (pictured) who was revealed as Islamic State's cold-blooded executioner Jihadi John this week, was a member of a terror cell that was known to have links to the failed July 21 attacks on London .
article_snippet: British Journalist David Haines (pictured) who was killed by Jihadi John - believed to be Mohammed Emwazi .
highlights_snippet: Mohammed Emwazi was revealed as Islamic State's executioner last week .
  