History of Soviet Russia and the Soviet Union (1917–27) the position of People's Commissar of War before the end of the year. In 1925, Trotsky was denounced for his essay "Lessons of October," which criticized Zinoviev and Kamenev for initially opposing Lenin's plans for an insurrection in 1917. Trotsky was also denounced for his theory of permanent revolution which contradicted Stalin's position that socialism could be built in one country, Russia, without a worldwide revolution. As the prospects for a revolution in Europe, particularly Germany, became increasingly dim through the 1920s, Trotsky's theoretical position began to look increasingly pessimistic as far as the success of Russian socialism was concerned.
NKVD were renamed "ministries". Accordingly, the Peoples Commissariat of Internal Affairs (NKVD) of the USSR became the Ministry of Internal Affairs (MVD), while the NKGB was renamed as the Ministry of State Security (MGB). In 1953, after the arrest of Lavrenty Beria, the MGB merged back into the MVD. The police and security services finally split in 1954 to become: In 1935–1945 Main Directorate of State Security of NKVD had its own ranking system before it was merged in the Soviet military standardized ranking system. 1 – 1943; 2 – 1943–1945. The main function of the NKVD was to protect the