Bin Laden's to blame for all the suffering in Iraq and Afghanistan, says ... founder of Al Qaeda

He added: “Within these secret organisations, leadership is very important. So when someone attacks the leadership from inside, especially personal attacks and character assassinations, this is very bad for them.”

A western diplomat in Cairo agreed with this assessment, saying: “It has upset Zawahiri personally. You don’t write 200 pages about something that doesn’t bother you, especially if you’re under some pressure, which I imagine Zawahiri is at the moment.”