There are five main models in foreign policy analysis that will be explored in this article: the rational actor model, the bureaucratic politics model and the organizational process model—all three of which were developed by foreign policy analyst and scholar, Graham Allison, and outlined in his book, The Essence of Decision: Explaining the Cuban Missile Crisis—as well as the inter-branch politics model and the political process model. In order for an international relations professional to effectively analyze foreign policy as a whole, it is necessary to determine the relative strengths and weaknesses of each model therein and understand the ways in which each approach has the potential to remedy the inadequacies of the others.