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Secret Files Reveal The Structure Of Islamic State

An image grab taken from an AFPTV video on September 16, 2014 shows a jihadist from the Islamic State (IS) group standing on
An image grab taken from an AFPTV video on September 16, 2014 shows a jihadist from the Islamic State (IS) group standing on the rubble of houses after a Syrian warplane was reportedly shot down by IS militants over the Syrian town of Raqa. The plane crashed into a house in the Euphrates Valley city, the sole provincial capital entirely out of Syrian government control, causing deaths and injuries on the ground. AFP PHOTO / AFPTV / STR (Photo credit should read -/AFP/Getty Images)

An Iraqi officer planned Islamic State's takeover in Syria and SPIEGEL has been given exclusive access to his papers. They portray an organization that, while seemingly driven by religious fanaticism, is actually coldly calculating.

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