The Evolving Concept of National Security in the Post–Cold War Era: Transnational Threats, Technological Transformations, and Non-Traditional Challenges The end of the Cold War in the early 1990s precipitated a significant redefinition of the concept of national security in international relations. Traditionally associated with the realist paradigm and defined narrowly in terms of protecting state … Continue reading How has the concept of national security evolved in response to emerging transnational threats, technological transformations, and non-traditional security challenges in the post-Cold War international order?