From the Document: "These are complex, turbulent, and uncertain times to be sure. The Department of Defense (DOD) is at an important inflection point. COVID-19 [coronavirus disease 2019] has irrevocably altered the dynamics of international security and reshaped DOD's decision-making landscape. As a result, DOD will have to adapt to significantly different strategic circumstances post-COVID than those assumed operative in the 2018 National Defense Strategy (NDS18). We recommend that DOD recognize this to be true, seize the initiative, create opportunity from crisis, and recraft defense strategy to re-emerge from COVID as a stronger, more hypercompetitive institution. The past is definitely prologue in this regard. DOD's current strategic circumstances mirror those of the immediate post-9/11 period. The wars that followed 9/11 forced a substantial strategic course correction on DOD. By 2003, it was clear that the azimuth set in the 2001 Quadrennial Defense Review (QDR01) was fundamentally compromised by the stark reality of the Iraq and Afghan wars and the wider 'Global War on Terrorism.'"
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