This is a very sobering critique of the USSR regarding the essential question with regard to whether revolution of 1917 only succeeded in substituting one class with a state (capitalist) class. The critiques are many including within Trotsky-Leninism and from without via the various leftist opposition and communist parties and councils.

This is a very informative and comprehensive read. Requires Adobe Acrobat Reader.

What Was the USSR?
Towards a Theory of the Deformation of Value