For neorealism, why states continuously seek power has little to do with human nature. Neorealism explains why states want more power with reference to the structure of the international system. While classical realism mainly focuses on state leaders and their decisions, neorealism, by contrast, emphasizes the structure of the international system that is external to the actors, in particular the relative distribution of power. “Leaders are relatively unimportant because structures compel them to act in certain ways. Structures more or less determine actions”