This book stunned me. As a student of the conflict and ex-squaddie (Derry-early 70's). I rate this one of the BEST books I have ever read! For me, his unjudgemental style speaks volumes, especially when he listens to a tape of the the last confession of an informant, just before the poor sod gets the coup-de-grace from the IRA nutting squad.
Another of his case studies is of a guy called Paddy Flood, a young Derry man brought up with the troubles erupting on his doorstep. Coming from a community with very little prospects in terms of jobs, votes and civil rights. He embraced republicanism as his truth - the way he saw the world. After school you riot, after Bloody Sunday the gunning down of people on a civil rights march, you join YOUR army. Flood's downfall was apparently down to his loyalty to a frail Wife. If you read this book, beware you are going to be challenged, so be forewarned you may have to ditch your prejudices.