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National Security
abbr., astronaut., mil.	NS
national security
USA	A collective term encompassing both national defense and foreign relations of the United States with the purpose of gaining: a. A military or defense advantage over any foreign nation or group of nations; b. A favorable foreign relations position; or c. A defense posture capable of successfully resisting hostile or destructive action from within or without, overt or covert (JP 1) see also security

National Security: 2 phrases in 1 subject

Abbreviation

2