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  1. National security - Wikipedia

    National security, or national defence (national defense in American English), is the security and defence of a sovereign state, including its citizens, economy, and institutions, which is regarded as a …

  2. What Does National Security Mean? A Modern Definition

    Aug 26, 2025 · National security primarily refers to the protection of a nation’s sovereignty, its territorial integrity, its citizens, and its established way of life from various threats.

  3. For most of the 20th century, national security was focused on military security, but as a concept, it expanded over time beyond what armed forces could do (or not do as the case may be).

  4. National Security – The White House

    President Trump designated deadly drug cartels and vicious transnational gangs as Foreign Terrorist Organizations, empowering law enforcement to make enormous progress arresting and deporting …

  5. National Security Definition and Examples - ThoughtCo

    Sep 24, 2021 · National security is the ability of a country’s government to protect its citizens, economy, and other institutions. Beyond the obvious protection against military attacks, national security in the …

  6. national security | Wex | US Law | LII / Legal Information Institute

    According to the U.S Department of Justice - Justice Manual, national security is also an umbrella term that includes "national defense, intelligence and counterintelligence, international and internal …

  7. National Security Definition - AP US History Key Term | Fiveable

    National security refers to the protection and defense of a nation's citizens, territory, and interests from external threats, as well as the preservation of its sovereignty and political integrity.

  8. Understanding the Concept of National Security - Brainwave Science

    National security refers to the measures taken by a country to protect itself from internal and external threats that may jeopardize its interests, values, or existence.

  9. The National Security Strategy: The Good, the Not So Great, and the ...

    Dec 5, 2025 · This National Security Strategy (NSS) marks an ideological and substantive shift in U.S. foreign policy. The administration is attempting to define a new “America First” foreign policy doctrine …

  10. National Security - an overview | ScienceDirect Topics

    Jul 20, 2011 · National security refers to the protection of a nation-state from external threats, which includes safeguarding its government, economy, and citizens from risks such as economic warfare, …