The Afghanistan File, written by the former head of Saudi Arabian Intelligence, tells the story of his department's involvement in Afghanistan, from the time of the Soviet invasion in 1979 to the attacks on September 11, 2001. It begins with the backing given by Saudi Arabia to the Mujahideen in their fight against the Soviet occupation, and moves on to the fruitless initiatives to broker peace among the Mujahideen factions after the Soviet withdrawal, the rise to power of the Taliban and the shelter the Taliban gave to Osama Bin Laden.

The extraordinary difficulties that Saudi Arabia and its allies faced in dealing with the Mujahideen are a central feature of the book. Prince Turki found them magnificently brave, but exasperating. On one occasion, in trying to arrange peace among them, he got permission from King Fahd to open the Kaaba in Makkah, and had the leaders go inside, where they were overcome with emotion and swore never to fight each other again. A few hours later on their way to Madinah, they almost came to blows on the bus.

Prince Turki's account gives details of the Saudi attempts in the 1990s to bring its volunteers out of Afghanistan – with chequered success – and his negotiations with the Taliban for the surrender of Osama Bin Laden. The book includes a number of declassified Intelligence Department documents.

Prince Turki explains that the nihilistic, apparently pointless terrorism that has been seen in the Middle East in the last twenty years had its origins in Afghanistan with Osama Bin Laden's deluded belief that he had helped defeat the Russians. There is no evidence that he ever fought them at all. Soon after the attacks on 9/11, Saudi Arabia discovered that it had a homegrown terrorist problem involving some of the returnees from Afghanistan. Many of the huge changes that have taken place in the Kingdom since have stemmed from the campaign to tackle this.