Balance of Power in International Relations. Metaphors, Myths and Models (Cambridge University Press, 2007) Hans Morgenthau, Politics Among Nations: The struggle for Power and Peace: Fourth Edition (New York: Knofp, 1967). Randall Schweller. 2016. "The Balance of Power in World Politics" in the Oxford Encyclopaedia of Politics. Paul W. Schroeder, "The Nineteenth century system: balance of power or political equilibrium?", Review of International Studies, 15, (1989), pp. 135–153. Schroeder argues that the BOP system is inherently unstable and conflict-prone because particular nations tend to have differing conceptions of what constitutes a "balance"; he contends that the equilibrium achieved in Europe between 1815 and 1854 rested not upon a BOP but upon a generally recognized system of British and Russian hegemonies. Michael Sheehan, The Balance of Power: History and Theory'' (Routledge, 2000). Political realism International security International relations theory