Predatory Islamic State Wrings Money From Those It Rules:

Across wide expanses of Syria and Iraq, the Islamic State, with the goal of building a credible government, has set up a predatory and violent bureaucracy that wrings every last American dollar, Iraqi dinar and Syrian pound it can from those who live under its control or pass through its territory. Interviews with more than a dozen people living inside or recently escaped from the Islamic State-controlled territory, and Western and Middle Eastern officials who track the militants’ finances, describe the group as exacting tolls and traffic tickets; rent for government buildings; utility bills for water and electricity; taxes on income, crops and cattle; and fines for smoking or wearing the wrong clothes.

Extraction economy.