States use wedge strategies to prevent hostile alliances from forming or to disperse those that have formed. These strategies can cause power alignments that are otherwise unlikely to occur, and thus have significant consequences for international politics. How do such strategies work and what conditions promote their success? The wedge strategies that are likely to have significant effects use selective accommodation—concessions, compensations, and other inducements—to detach and neutralize potential adversaries. These kinds of strategies play important roles in the statecraft of both defensive and offensive powers. Defenders use selective accommodation to balance against a primary threat by neutralizing lesser ones that might ally with it. Expansionists use selective accommodation to prevent or break up blocking coalitions, which isolates opposing states by inducing potential balancers to buck-pass, bandwagon, or hide. Two cases—Great Britain's defensive attempts to accommodate Italy in the late 1930s and Germany's offensive efforts to accommodate the Soviet Union in 1939—help to demonstrate these arguments. By paying attention to these dynamics, international relations scholars can better understand how balancing works in specific cases, how it manifests more broadly in international politics, and why it sometimes fails in situations where it ought to work well.

Realist scholars have long debated the question of how much power states need to feel secure. Offensive realists claim that states should constantly seek to increase their power. Defensive realists argue that accumulating too much power can be self-defeating. Proponents of hegemonic stability theory contend that the accumulation of capabilities in one state can exert a stabilizing effect on the system. The three schools describe different points along the power continuum. When a state is weak, accumulating power increases its security. This is approximately the situation described by offensive realists. A state that continues to accumulate capabilities will eventually trigger a balancing reaction that puts its security at risk. This scenario accords with defensive realist assumptions. Finally, when the state becomes too powerful to balance, its opponents bandwagon with it, and the state's security begins to increase again. This is the situation described by hegemonic stability theory. These three stages delineate a modified parabolic relationship between power and security. As a state moves along the power continuum, its security increases up to a point, then decreases, and finally increases again. This modified parabolic relationship allows scholars to synthesize previous realist theories into a single framework.