Progressive research on degenerate alliances

Our article (1990) on alliance dynamics in multipolarity, which John Vasquez criticizes, differs from om some neorealist approaches by incorporating variables from the theory of the security dilemma, including perceptual factors. Nonetheless, our argument meets Imre Lakatos's criteria for a progressive problem shift insofar as it explains more than the original theory, does so parsimoniously, has been successfully applied to new domains, and does not introduce new assumptions that contradict the core of the original theory.