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R45349Intelligence and National Security

The 2018 National Defense Strategy: Fact Sheet

Federal & State Law Editorial TeamLast reviewed: July 2026
February 5, 2018

Summary

[SUPPRESS] On January 19, 2018, Secretary of Defense Mattis released the unclassified summary of the Department of Defense’s (DOD) first congressionally mandated National Defense Strategy (NDS). In addition to stating DOD’s approach to contending with current and emerging national security challenges, the NDS is also intended to articulate the overall strategic rationale for programs and priorities contained within the FY2019-FY2023 budget requests. Overall, the document maintains that the strategic environment in which the United States must operate is one characterized by the erosion of the rules-based international order, which has produced a degree of strategic complexity and volatility not seen “in recent memory” (p. 1). As a result, the document argues, the United States must bolster its competitive military advantage—which the NDS sees as having eroded in recent decades—relative to the threats posed by China and Russia. It further maintains that “inter-state strategic competition, not terrorism, is now the primary concern in U.S. national security.” (p. 1)

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