In a new report, International Christian Concern (ICC) Fellow Daniel St John examines the revenue-generating systems in Africa that support Islamic extremist groups like the Islamic State group and al-Shabab. The report, “The East African Terrorism Economy: Systemic Targeting of Christians,” provides an overview of the Islamic extremist groups, the Somalia-based financial hub for regional terrorist networks, and the challenges associated with disrupting terrorist funding. St John also examines why sanctions alone have failed to halt these groups’ ability to generate revenue and support operations. Christians constitute the majority population in many of the regions most affected by these groups.