After three years and over 22,000 air strikes, the Levantine ‘Caliphate’ manifestation of the Islamic State seems destined for destruction in 2017. Yet the revolt of radicalised Sunni Arabs is unlikely to abate in Iraq or Syria, with the battlefield shifting to localised guerrilla insurgency, increasing attacks within western states, and the opening of new fronts in the global margins, not least Asia and Africa. Read more