concept security,liberalism,realism.constructivism,critical.

The present research aims to analyze the concept of security in Realism, Liberalism, Constructivism and Critical theories over the past time periods and the process of traditional theories development hitherto. Thinkers and politicians in particular conjecture strongly that the traditional concept of security is the purpose of the states, first and foremost, for their protection and survival in utmost self-help. The approach towards the element of security exists in the form of traditional assumptions of international relations steeped in military nature, military equipment and the dominant pessimistic perception. Thereupon achievement of absolute security has been prevailed among traditional theories, but the researcher believes that as the time goes by, Liberalism dominates and then subjectivist approaches develop, therefore the fixed meaning of security defined in terms of traditions and Realism no longer exists. Thus the concept of security undergoes changes when redefined. Meanwhile, its scope of meaning has been broadened in the form of different new concepts. By investigating the topics and opinions of the above four approaches thinkers as well as the data and the findings, this study aims to answer the following question, “To what extent has the concept of security undergone changes in the course of development of these four approaches? The provisional answer indicates that security in these approaches encompassing different ontology and epistemology methodologies in the course of time includes a variety of subject areas from new subjects with different interpretations.