"The Invisible Enemy" (theory on Soviet espionage)

"The Invisible Enemy" theory refers to the idea that Soviet espionage during the Cold War was highly covert and pervasive, operating secretly within governments, military, and industries of Western countries. It suggests that Soviet spies worked clandestinely to gather classified information, influence policies, and undermine opponents without detection. The "invisible" aspect emphasizes how these spies hid their identities and activities, making it difficult for Western intelligence agencies to recognize or combat the threat effectively. This theory highlights the profound impact of espionage as a hidden but persistent challenge to national security during that era.