Before he started interrogating insurgent prisoners in Iraq, he had been told that they were highly ideological and committed to establishing an Islamic caliphate in Iraq, Major Alexander says. In the course of the hundreds of interrogations carried out by himself, as well as more than 1,000 that he supervised, he found that the motives of both foreign fighters joining al-Qa'ida in Iraq and Iraqi-born members were very different from the official stereotype. In the case of foreign fighters – recruited mostly from Saudi Arabia, Egypt, Syria, Yemen and North Africa – the reason cited by the great majority for coming to Iraq was what they had heard of the torture in Guantanamo and Abu Ghraib. These abuses, not fundamentalist Islam, had provoked so many of the foreign fighters volunteering to become suicide bombers.