The modern concept of U.S. homeland security has existed since 9/11, with the formation of a cabinet-level department devoted to this issue and a refocusing of national policy and resources to deal with the dangers of terrorism and national disasters that threaten the security and well being of the nation. However, there has never been an agreed definition of the meaning of the term “homeland security.”
This article discusses the evolution of homeland security and the many factors affecting development of an official definition. It demonstrates that this concept is part of the broader realm of national security and related to emergency management and homeland defense. The analysis can support homeland security curriculum development and stimulate classroom discussions. It can also be helpful to Department of Homeland Security (DHS) officials, other government officials working in this area, and nongovernmental experts and research organizations with security interests.
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Kahan, J. H. (2013). What's in a name? The meaning of homeland security. Journal of Homeland Security Education, 2, 1-18, https://jsire.org/whats-in-a-name-the-meaning-of-homeland-security