How did Islamist terrorism arise? In this unrivalled exposé based on original sources, Craig Unger pieces together how the desperate search for oil profits by the Bush family together with their close connection to the Saudi royal family, created a toxic new by product - Islamism. Unger interviewed three former directors of the CIA, top Saudi and Israeli intelligence officials, and hundreds of other sources - including employees from the Carlyle Group, the spectral giant investment firm in which both the Saudi and Bush families have a major stake and which employed John Major and Tony Blair.