this dissertation has six chapter and tree appendices. chapter 1 introduces the thesis proposal including description of problem, key questions, hypothesis, backgrounds and review of literature, research objectives, methodology and theoretical concepts (key terms) taken the literature and facilitate an understanding of national security, national interest and turkish- israeli relations concepts. chapter 2 introduces zionist regime, turkey and iran, giving a brief description from history of each country and then moves into a more detailed discussion of current political, military, cultural and economic conditions in the region. it also discusses about geography, climate, demography and other details related to these countries. chapter 3 first describes turkey and israel security challenges and presents the affected element in increasing turkish –israeli relations. in this chapter generally we are discussing about the importance of turkey and its alliance with israel for west. also we have an overview on us and jewish lobbys role in turkish –israeli relation .chapter 4 studies turkey and israels mutual relation in terms of economy, military, political and technical and confirm that turkish –israeli relations were increasing in recent decades. chapter 5 discusses the implications of turkish-israeli relation on iranian national security and also on iran-turkey relations. chapter 6 reviews the central arguments of dissertation, highlights the research founding, analyzes hypotheses and answers the questions planed in the proposal. finally appendices provide information about the timeline of turkish-israeli relations, 1949–2006, free trade agreement between turkey and israel and main political parties in turkey, gives a deep view to the research.