Which agency is responsible for counterintelligence operations?

• A. FSB
• B. SVR
• C. GRU
• D. NSA

Answer: (A)

Counterintelligence is about identifying and stopping espionage and insider threats that could harm national security. In this framework, the domestic security service is responsible for warding off foreign intelligence activity inside the country, protecting critical infrastructure, and running counterintelligence operations. The FSB fits this role as Russia’s domestic security agency charged with counterintelligence, surveillance, and internal security tasks. The other agencies have different primary missions: the SVR focuses on foreign intelligence gathering abroad; the GRU handles military intelligence; and the NSA concentrates on signals intelligence and information assurance from the U.S. perspective, not domestic counterintelligence. So the FSB is the best fit for counterintelligence operations.