Article Title,Year,Volume,Issue,Page Range,Author Success and Failure in Terrorist Investigations: Research and Lessons from Northern Ireland,2005,13,3,250-261,Silke Terrorism crime and private armies,2002,11,2-3,239-253,Sullivan The imperfect peace: explaining paramilitary violence in Northern Ireland,2002,11,1,116-138,Neumann Operational combat analysis of the Al Qaeda network,2002,11,2-3,316-339,Bunker