By Eugene Victor Walter
By Gabriel Doherty, Dermot Keogh
By Ali Soufan
By Sean O'Driscoll
By Jeremy Black
By Nicky Curtis
By Brian Wicker, David Fisher
By Robert A. Pape
By David J. Whittaker
By Dexter Filkins
By William Finnegan
By Masha Gessen
By Larisa Brown
By John Lamphear (Associate Professor of History, Associate Professor of History, University of Texas at Austin)
By Jeremy Keenan
By Con Coughlin
By Ahmed Rashid
By Christina Lamb
By Joan Smith
By Adrian Levy, Cathy Scott-Clark
By Colas, Alejandro, Saull, Richard
By Robert Baer
By Terence Ball, Richard Dagger
By Paul Bew, Gordon Gillespie
By Diego Gambetta (, Professor of Sociology and Official Fellow of Nuffield College, University of Oxford)
By Geoff White
By Peter Conrad
By Vic Gatrell (University of Cambridge)