Özet:

In this study, the evolution of US security strategies since its foundation is discussed on the basis of national security policy. While examining the perception of security that developed in parallel with the US's own philosophy during the establishment period, it was explained how the world formed during the First World War, the Second World War and the aftermath of the United States pushed the security understanding of the USA to Europe and the rest of the world. After mentioning the Cold War period, which had a great impact on shaping the identity of the USA, the 1990s were explained and the September 11 attacks, which brought the US security understanding to today and accepted as a milestone, and the reaction to these attacks were explained. In the study, which describes the security perception of the Trump period after the President Bush and President Obama periods, it is revealed that the September 11 events are another milestone in terms of security understanding in US politics, and the effective understanding of the Trump era is another milestone. In this study, a comprehensive literature review was conducted, while secondary data from various sources were included, and thoughts and events affecting the security perceptions of the periods were handled with an interpretative perspective.

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