The commencement of the 1st Five Year Plan in the USSR signaled quite a break from state policy as it was in the 20s. And by that, I mean kicking the NEP to the curb. This shift caused no small debate within the Soviet hierarchy, and Stalin would use the divisions as a wedge against his enemies. 

Bibliography for this episode: 

1. Allen, Robert C. Farm to Factory: A Reinterpretation of the Soviet Industrial Revolution Princeton University Press 2003
2. Cohen, Stephen F. Bukharin and the Bolshevik Revolution: A Political Biography, 1888-1938 Oxford University Press 1980
3. Lewin, Moshe Making the Soviet System: Essays in the Social History of Interwar Russia Pantheon Books 1985
4. Lewin, Moshe The Soviet Century Verso 2016
5. Kotkin, Stephen Stalin: Waiting for Hitler, 1929-1941 Penguin Press 2017

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