relational power

In international relations theory, relational power is most closely associated with Robert Dahl's classic 1957 formulation in Behavioral Science: "A has power over B to the extent that he can get B to do something B would not otherwise do." Power is thus not a possession or stockpile but a relation between actors, observable only through its effects on behavior.

This view stands in contrast to resource-based or "elements of power" approaches, which treat power as an attribute measurable through tangible assets (GDP, military spending, population). Critics like David Baldwin, in Paradoxes of Power (1989) and later Power and International Relations (2016), argued that capabilities only translate into outcomes within a specific scope (the issue at stake) and domain (the actor targeted). A state powerful in trade may be weak in human-rights diplomacy; nuclear weapons that deter great-power war may be useless against insurgents.

Key analytical features of the relational approach:

• Context dependence — power varies by issue area, not just totals.
• Dyadic structure — it requires identifying A, B, and what B is being induced to do.
• Counterfactual logic — one must specify what B would have done absent A's influence.
• Costs and asymmetric interdependence — drawing on Keohane and Nye's Power and Interdependence (1977), leverage flows from who would bear higher costs if a relationship were severed.

Relational power underpins later refinements, including Steven Lukes's "three faces of power" (decision-making, agenda-setting, preference-shaping) in Power: A Radical View (1974), and Barnett and Duvall's taxonomy in International Organization (2005), which distinguishes compulsory, institutional, structural, and productive power. Constructivists extend the relational logic further, arguing that identities and interests themselves are constituted through social relations rather than given prior to interaction.

For analysts, the practical payoff is methodological discipline: claims like "China is more powerful than Japan" are incomplete until one specifies power to do what, over whom, at what cost.