Why is “security” such a controversial concept? The foreign, military, and economic policies of states, the intersections of these policies in areas of change or conflict, and the general structure of relationships they create, are all analyzed in terms of aspirations to achieve national security and /or international. Security is most often associated with mitigating threats to cherished values ​​(Williams; 2008). However, this is too vague a definition and reflects the inherent nature of security as an “essentially contested concept” (Gallie; 1962). In the modern context, security is associated with many key concepts: uncertainty, war, terrorism, genocide and massacres, ethnic conflicts, coercion, human security, poverty, environmental damage, health and of course the traditional notion of military security. Such concepts necessarily generate intractable debates about their meaning and application because, as Richard Little points out, they "contain an ideological element which renders empirical evidence useless as a means of resolving the dispute." In this essay, I will then attempt to explore the different contested security concepts and explain how and why this contestation arose. Until the rise of economic and environmental concerns in the 1970s, the concept of security was rarely discussed in terms other than political interests. of particular actors and, until the end of the 1980s, the debate still had a strong military dimension. Arnold Wolfers, in his 1962 article, called security an "ambiguous symbol" – he states at one point that it "may not have any precise meaning at all" – reflecting the multidimensional complexity of the concept. There is today... middle of article ...... leverage on domestic affairs that can be obtained by invoking it, offers political and military elites the possibility of strategies to maximize the power. Works CitedBROWN, Michael (ed.): The International Dimensions of International Conflict (MIT Press; 1996) BUZAN, Barry: People, States & Fear: An Agenda for International Security Studies in the Post-Cold War Era (Harvester Wheatshef; 1991) HOFFMAN, Bruce: Inside Terrorism (Indigo; 1998) HOUGH, Peter: Understanding Global Security: Routledge; 2004) KATZENSTEIN, Peter (ed.): The Culture of National Security – Normals and Identity in Global Politics (Columbia; 1996) KOLODZIEJ, Edward: Security and International Relations (Cambridge; 2005) NOLAN, Janne: Global Engagement – ​​Cooperation and Security in the 21st Century (Brookings Institution; 1994) WILLIAMS, Paul: Security Studies: An Introduction (Routledge; 2008)