Three years after the invasion of Iraq the country was in turmoil. Insurgents had mounted a brutal resistance against the allied forces, seeing them as invaders not saviours. At the same time religious groups within the country were waging war against each other. This situation created a major opportunity for Al Qaeda to gain a foothold inside Iraq. In part two of this remarkable series we hear how Sunnis first courted, then turned on Al Qaeda and how the U.S. changed its strategic policy. It's a brutal story filled with violence, intrigue and duplicity, all told by the people at the heart of the struggle .
