As the incredible events in Iran unfold--in the streets of Tehran and on Twitter--the obvious question is: is this the 'Green Revolution' or something else for which we don't have a pre-fab category.I would call your attention to two outstanding posts that give a very good insight into what to watch for. The unifying theme was perhaps best articulated by an anonymous Iranian commentator at Salon: "Legitimacy, much debated by social scientists, actually turns out to matter. It's not just force that rules..." (h/t). In short, this is a moment of contentious politics* where the legitimacy of...