After the death of Osama Bin Laden, many in the West allowed themselves to imagine that Islamist violence was on the wane. But ISIS and other extremist groups have taken over where al-Qaeda left off, unleashing chaos in Iraq and Syria, undermining other Middle Eastern states and spreading panic in the West. But who are the jihadists, where did they come from, and what do they really believe? For this special debate, chaired by Tom Clonan of The Irish Times, Jean-Pierre Filiu - author of From Deep State to Islamic State – joins Shiraz Maher – author of Salafi-Jihadism - to examine one of the most destructive political movements of our time. Presented in association with the Embassy of France in Ireland.