Explain the Meaning and Significance of the Realist Concept of the Balance of Power

Changes, which occurred at both a domestic and international level, during the 1960's and 1970's, have been attributed mostly for the rise of the pluralist school of thought, and brought the relevance of the realist paradigm into question. Events such as the easing of tensions in Europe to the student antiwar protests in America have promoted the pluralist theory.
The assumptions, which the pluralists see as key to their theory, are evident in the world today, and so have appeared to force the theory of international politics, a discipline that is dominated by realism, to be rethought to include a pluralist dimension.
To understand how 'real' world events put the realist paradigm into doubt, and increased the relevance of the pluralist school of thought, we must first understand the actors, concepts and assumptions of the pluralist theory, and how they challenge realist thought, and then show how events have provided evidence of the relevance of the pluralist paradigm in the world of international politics.
The pluralist image comprises of different assumptions. The first of which, is that nonstate actors are important and cannot be ignored.
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