Cold world war is between 1945 to 1992 in between soviet union and america. cold war is happened due to arm race, space exploration and uncontrolled nuclear weapons and Tests.
To check with each other progress us and soviet union always trained spy agent. then us established CIA to catch soviet spies. soviet spies are harmful because,
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they can take out system information very easily
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they can not be recognize easily.
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they make communications secretly.
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they work under ground.
Generally mafia and drug dealers always engage with soviet spies to provide information and hence they get girls or money in return so CIA start work with mafia people in order to get information about spies.
around 300 spies get killed during cold war
.