» For neorealism in film or literature, see neorealism (art) or Italian Neorealism. Structural realism is also a position in the philosophy of science, originally held by Henri Poincaré, and resurrected by John Worrall. Neorealism or structural realism is a theory of international relations, outlined by Kenneth Waltz in his 1979 book, Theory of International Politics. Waltz argues in favor of a systemic approach: the international structure acts as a constraint on state behavior, so that… (More on Neo-realism)