Research on decision making in foreign policy and national security has had little interaction with the field of public policy. This review connects the two fields. We utilize a key public policy concept, the policy cycle, to provide a framework for our review of group decision-making dynamics in national security and foreign policy. We describe key stages of the policy cycle followed by a review of the leading models of group decision-making dynamics. We then construct a bridge between the two, demonstrating how specific stages of the policy cycle are typically associated with specific group decision-making dynamics. To illustrate this link we provide an example of decision-making dynamics within the Obama administration throughout policy stages of the 2016 campaign against the Islamic State in Raqqa, Syria.