Russia : A new Imperialist Power ? by Buzgalin, Kolganov and Barashkova

Political Economy Research published a series of articles on Russia and Question of Imperialism a few years ago - the case for Russia being Imperialist was given by RCIT here

http://democracyandclassstruggle.blogspot.co.uk/2014/05/russia-its-monopoly-capital-and-its.html

The opposite case is well argued in the study above by Buzgalin Kolganov and Barashkova..