Second is the nature of the terrorist attacks committed by Muslims in Western countries. They're not often perpetrated by Islamic State operatives. More often they're perpetrated by people who are just sympathetic to the IS message. Sometimes the terrorists are life-long citizens of the country they live in, but they sympathize with the injustice being done to Muslims elsewhere. The demise of Islamic State won't deter such attackers. It might even inspire more people to take up the cause.