CEP Senior Advisor Ian Acheson writes: "Watching Novembre, Cédric Jimenez’s 2022 dramatisation of the manhunt for the perpetrators of the November 2015 Bataclan massacre, what stands out is the gaping chasm between how France and Britain have reckoned with jihadism – an ideological threat that has irrevocably altered both our societies, far more than we would care to admit."