Historical Dictionary of Russian and Soviet Intelligence

At its peak, the KGB (Komitet Gosudarstvennoy Bezopasnosti) was the largest secret police and espionage organization in the world. It became so influential in Soviet politics that several of its directors moved on to become premiers of the Soviet Union. In fact, Russian president Vladimir V. Putin is a former head of the KGB. The GRU (Glavnoye Razvedyvatelnoe Upravlenie) is the principal intelligence unit of the Russian armed forces, having been established in 1920 by Leon Trotsky during the Rus…