A new book reveals how much was known about al-Qaeda before the attack, says charles laurence September 11 in New York still comes as a bitter end to all the hopes and pleasures of summer, and this year marks the fifth anniversary of the day al-Qaeda destroyed the twin towers of the World Trade Centre. Those five years have done remarkably little to heal wounds, both national and personal. But the sense of dread seems more acute than ever because I have been reading The Looming Tower by journalist and academic Lawrence Wright, which is in its second week on...