This course is designed to provide the student with a basic knowledge of the issues relating to nuclear trafficking, from both a technical and historic perspective. The nuclear and other radioactive materials useful for either an improvised nuclear device, a dispersal device, or a simple exposure device will be considered, along with the technologies used to prevent and detect trafficking in these materials. The history of trafficking in these materials, design concepts, and hoaxes and scams relating to these issues will be covered along with the major efforts and initiatives that have been developed by the international community to deal with them.