Book excerpt: Valdez argues that the use of the fundamental principles of Marxism-Leninism to perform various functions ultimately brought about a change in the basic assumptions of the theory itself. This resulted in the abandonment of the previous insistence on a universal model of socialism and of the idea that the international interests of the socialist bloc must take precedence over individual national interest. Soviet influence in Eastern Europe rested on little else than these ideological principles and consequently stood little chance of surviving their re-interpretation. Finally Valdez assesses the re-interpretation of the fundamental principles of Soviet-East European relations by reformist scholars in the Soviet Union, and the response by conservative members of the party apparatus.