Jisho

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Noun, Noun which may take the genitive case particle 'no'
1. security guarantee (e.g. military security, network security, etc.)
Wikipedia definition
2. National securityNational security is the requirement to maintain the survival of the state through the use of economic, diplomacy, power projection and political power. The concept developed mostly in the United States of America after World War II. Initially focusing on military might, it now encompasses a broad range of facets, all of which impinge on the non military or economic security of the nation and the values espoused by the national society.
Read “National security” on English Wikipedia
Read “安全保障” on Japanese Wikipedia
Read “National security” on DBpedia

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