Part I. Setting the Scene. Breaking down the barriers: protest
Syria's flirtation with Jihadism
Part II. First on the scene. March-December 2011: Jabhat Al-Nusra forms
January-August 2012: Jabhat Al-Nusra emerges
September 2012-March 2013: Jabhat Al-Nusra rises
Part III. Making a scene. April-June 2013: the Islamic State joins the conflict
July-December 2013: rising tensions
January-April 2014: turning against the Islamic State
Part IV. Caliphates, Emirates and Divergence. May-August 2014: declaring a caliphate
September-December 2014: strikes and divisions
January-June 2015: tipping the scales