Thomson ReutersIn a BBC interview just after the recent Manchester suicide bombing, French scholar Gilles Kepel offered a three-stage chronology of the development "jihadi" activism. The first stage he identified emerged in 1979, around the time of the Iranian revolution, and failed to mobilise the pious masses. It was followed, he says, by a second stage, largely defined by the notorious acts of al-Qaeda. Now, Kepel’s analysis goes, we are living in a third stage, one that began in the mid-2000s with the 2004 publication of Abu Musab al-Suri’s The Global Islamic Resistance Call.