The book suggests that the September 11 attacks were self-inflicted : a covert operation aimed at influencing domestic opinion and to persuade Americans to support the invasions of Afghanistan and of Iraq . It is written in a speculative style , laden with terms such as " could " , " might " , " maybe " and " if " , and does not directly accuse the Central Intelligence Agency of direct responsibility for the attacks . It does , however , attempt to demolish the " conventional " account of the 9/11 attacks , and while it does not build up a substantive account to replace it , it leaves insinuations and rumours to suggest possibilities . For instance , while it is argued that such well-organized attacks could only occur with " the support of the intelligence agencies " , the exact details of that support are left unspecified . The book suggests that no plane crashed into The Pentagon and none in Pennsylvania on 9/11 , and that the alleged mobile phone calls on United Airlines Flight 93 were not real
United Airlines Flight 93
United Airlines Flight 93
The CIA and September 11