The tactic involves clandestine efforts by individuals or groups within a country to undermine its stability or aid an enemy. This can manifest as espionage, sabotage, disinformation campaigns, or the fomenting of internal dissent. As an example, during the Spanish Civil War, the term was used to describe sympathizers of the Nationalist forces operating within Republican-held territories, weakening their defenses from within.
Understanding such strategies is crucial for national security and the preservation of democratic institutions. Recognizing the methods employed by these subversive elements allows for the development of countermeasures and the strengthening of societal resilience against manipulation and destabilization efforts. Historically, instances of this type of activity have had significant consequences, influencing the outcomes of conflicts and reshaping political landscapes.
