This dissertation is an examination of terrorism and counterterrorism using the framework of conflict analysis and resolution.  We develop a definition and a typology of terrorism that is based on the primary motivators of terrorism.  We review of the causes of ethno-national terrorism focusing on relevant micro and macro level theories.  We review the strategies and tactics of contemporary terrorism and counterterrorism.  We develop a framework to analyze counterterrorism based on the use of power, rights, and interest-based methods and processes.  We develop an interest-based model of counterterrorism based on the theories and practices of conflict resolution.  We use a case study analysis of the terrorism and counter- terrorism approaches used in Northern Ireland to validate our concepts and models.  We apply Sandole’s three pillar model of conflict analysis to analyze terrorism and counterterrorism interventions in Northern Ireland.  A review of the implications of an interest-based model of counterterrorism in contemporary terrorist conflicts.