Former high-level CIA officer Michael Scheuer – a 22-year CIA veteran who was the head of the CIA unit tasked with capturing or killing Bin Laden, the Chief of the Sunni Militant Unit, and served in both the Directorate of Intelligence and the Directorate of Operations (and Georgetown University professor at the Center for Security Studies) – had to know his jihadi enemies in order to track and defeat them.

Scheuer testified to the House Homeland Security Committee on October 9, 2013 on the real causes of Islamic jihad: