To what extent has Neorealism or Structural Realism addressed the limitations of Classical Realism? Neorealism has gone so far to address the limitations of Classical Realism that it cannot stand alone without Classical Realism as a theory of IR. Each theory presents a set of challenges that one cannot be overcome without the aid of the other. Where the two theories diverge, Neorealism appears to be a maturing of Realism by accepting a greater importance of structural factors. In the aim for scientific validity, however, Neorealism falls into its own quagmire by denying the composition of the state and simplifying it down to a singular unit.