Final answer:
Espionage is the use of spies and secret agents to gather information about an enemy. Stalin utilized espionage through the KGB to gather information and carry out sabotage and assassinations against enemies of the Soviet Union.
Step-by-step explanation:
Espionage refers to the use of spies and secret agents to gather information about an enemy. During the Cold War, both the United States and the Soviet Union used espionage as a tactic to gain information about each other. Stalin, the leader of the Soviet Union, utilized espionage through the KGB, the Soviet Union's spy agency, to gather information, plot acts of sabotage, and carry out assassinations against those deemed enemies of the country.