International Relations Theories and Policy

Explain how the extent theory relates to policymaking.

What is the relationship of theory to actual policy? Are theories pre-packaged conceptual tools policymakers then apply to the interpretation of actual events? Expressed differently, is there a 1/1 correspondence between a particular event and a theory that explains it? If so, how do you explain two “realists”? Can you identify a particular IR theory that appeals to you as a better explanation of human behavior than others? Or would you say that the existence of multiple theories is an indication that perhaps all of them are plausible as possible interpretations of the same or different human events?