In September 2006, when 45 scholars and activists from 19 countries around the world gathered amid the spires and gargoyles of Oxford for a conference entitled, "Hope: Probing the Boundaries," complex dialectics of hope and despair circulated through the meeting rooms by day, and the conversations in quadrangles and pubs late into the night. On the one hand, the remarkable social and political openings and possibilities of the previous decade, from Berlin to Johannesburg, Leningrad to the Lacandon jungle of Chiapas, seemed to be ever-more constrained by political and economic forces as...