Can We Stop Terror-by-Truck?

Life for millions of young men in the Islamic world — and in Muslim enclaves in the West — is characterized by chronic unemployment, abysmal educational opportunities, social dislocation and widespread governmental corruption or indifference. In its well-produced propaganda, the Islamic State promises the opposite: a life of camaraderie, consequence, adventure, spiritual fulfillment and a chance to create an Islamic utopia. Further marginalizing vulnerable communities — say, by subjecting them to loyalty tests, as some politicians have suggested — would only exacerbate the problem