Theories of political realism have lost their luster in recent years: Both the classical variant and structural realist adjustments are, it has been argued, deeply flawed. An oversimplified view of what motivates states, an unwillingness to recognize the part domestic political arrangements and ideas play, and an insufficient appreciation of institutional constraints and of networks of economic interdependence undermine, it is said, the theory's foundations. Moreover, many doubts have been raised about its predictive power.