ABSTRACT
The political system established by the Bolsheviks after they seized power in Russia in November 1917 was explicitly dedicated to change. Bureaucratization represents one aspect of structural change. A quantitative change may include far-reaching adaptations of structures, functions, or scope, or additions of new actors, but it stops short of affecting the system's basic nature. Modernization and nationalism have been the two major internal stimuli for change. While modernization does generate group demands for recognition and participation, not all such demands necessarily lead to pluralism. The leading role exercised by the League of Communists of Yugoslavia continues to be the cornerstone of the Yugoslav political system, even though it has been eroded by pluralist forces released by the implementation of workers' self-management and the decentralization of state and party structures. One important area of change to be considered is that of relations between the Soviet Union and the Communist states established and supported by it.
