FILE - In this Sept. 11, 2001 file photo, people run from a collapsing World Trade Center tower in New York. For over a decade after the autumn of 2001, America, with its allies, has been at war against factions of Islamist militants and terrorists, including the Taliban and al-Qaida, as well as offshoots in Yemen, Somalia and elsewhere. (AP Photo/Suzanne Plunkett, File)