balance of power balance of power. (politics), such an adjustment of power among sovereign states that no one state is in a position to interfere with the independence of the others; international equilibrium; also, the ability ( of a state or a third party within a state) to control the relations between sovereign states or between dominant parties in a state... see also balance
Balance of power (international relations), parity or stability between competing forces
Balance of power (federalism), distribution of power between a central government and its subnational governments
Balance of power (parliament), the power exercised by a minor political party whose support enables a minority government to obtain office
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The balance of power theory in international relations suggests that national security is enhanced when military capability is distributed so that no one state is strong enough to dominate all others. If one state becomes much stronger than others, the theory predicts that it will take advantage of its strength and attack weaker neighbors, thereby providing an incentive for those threatened to unite in a defensive coalition. Some realists maintain that this would be more stable as aggression would appear unattractive and would be averted if there was of power between the rival coalitions.