In international relations, hierarchy is understood in two related ways. In the most general usage, hierarchy refers to any ranked ordering, most commonly conceptualized in international relations as status rankings. In a more narrow usage, hierarchy refers to relations of authority in which a dominant state sets rules for or possesses more or less authority over one or more subordinate states. So defined, hierarchy in international relations is the antonym to the more common concept of anarchy. This bibliography focuses on the second, more narrow conception of hierarchy. The broader usage is examined in the Oxford Bibligraphies article Status in International Relations by Jonathan Renshon. There have been, of course, historical international systems structured by hierarchy, including the Roman Empire and China, examined by scholars of international relations for their own dynamics or as a contrast to the present international system. We address these historical systems in Hierarchical Systems. Since the Peace of Westphalia in 1648, however, the European international system and, through the diffusion of norms and practices, the global system have been understood as characterized by anarchy, or the absence of any authority higher than the nation-state. While not disputing that the current international system as a whole is anarchic, contemporary scholars of international hierarchy claim it is a fallacy of composition to assume that what is true of the system must also be true of its parts. Rather, this emerging literature allows for relations of authority between states at the level of dyads or sometimes regions. Hierarchy is a form of power but differs from power-as-coercion as understood in theories of international politics. Many studies of international relations place power at the center of their analyses, seeing it as the primary determinant of international diplomacy and bargaining outcomes. Authority, however, implies more than just the ability to coerce or even create incentives for states to alter their behavior. Rather, authority implies a “right to rule” in which subordinates accept that the dominant state can regulate legitimately certain limited actions, that they have an obligation to comply when possible with those regulations, and that the dominant state has the right to enforce its regulations in the event of non-compliance. In this way, authority constitutes a social relationship in which limited duties and obligations are recognized by both dominant and subordinate states. A now substantial literature has emerged that aims to explain when and how hierarchy between states will arise, how it functions, and with what consequences. After outlining works that contribute to this unfolding of hierarchy, we turn to historic international systems that were more clearly organized hierarchically.
