Over the last three years Europe and North America have been hit by an unprecedented wave of terrorist attacks perpetrated by individuals motivated by jihadist ideology. The roots of this development are largely to be found in two, deeply intertwined phenomena: the military successes achieved by the Islamic State and its declaration of a Caliphate along with the large number of followers the group has managed to attract in the West. This report identified 51 successful attacks throughout Europe and North America from June 2014, when the Caliphate was declared, until June 2017…..