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English definition of “counter-espionage”

counter-espionage

noun [U] uk   /ˌkaʊn.tərˈes.pi.ə.nɑːʒ/ us    /-t̬ɚˈes-/
secret action taken by a country to prevent another country from discovering its military, industrial, or political secretsSpying and espionage
(Definition of counter-espionage from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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