The book introduces into scientific circulation for the first time transcripts of meetings and a stenographic report of the meetings of the August Joint Plenum of the Central Committee and the Central Control Commission of the All-Union Communist Party of Bolsheviks. Theses of directives for the development of the national economy for the 1927/1928 economic year, resolutions of the plenum on the international situation, the work of the RKI, on the opposition and on the issue of the exclusion of L. D. Trotsky and G. E. Zinoviev from the Central Committee of the All-Union Communist Party of Bolsheviks, the platform of the united opposition and former members of the “democratic centralism” group, minutes of the plenum meeting with all appendices to it. The publication is intended for specialists - researchers of the history of the party and Soviet society, teachers and students of humanities faculties and universities, as well as people interested in Soviet history.