Given the prominence of air power as a foreign policy tool, we attempt to clearly link the military process of dropping munitions on the target state to the accompanying diplomatic process between the attacker and the adversary. To explore the connection between the two processes, we look at the 1999 NATO bombing campaign over Kosovo, which allows us to isolate the influence of air power. Why were 78 days of NATO bombing needed to convince Milošević to make concessions? Comparing expectations from both bargaining models and traditional coercive models, we find that the intensity of bombing, the duration of bombing, and mediation were important predictors of the Serbian government's behavior during the Kosovo crisis.There are a lot of people who say that bombing cannot win a war. My reply to that is that it has never been tried … and we shall see.Marshal of the Royal Air Force Sir Arthur ''Bomber' ' Harris, 1942. Clausewitz famously suggested that war is an extension of diplomacy, but many of our empirical models of conflict do not explicitly consider the relationship that battlefield engagement has with the underlying diplomatic process that will likely end the conflict. Studies of coercion are frequently framed around a clear cut dichotomy between success and failure, but numerous scholars have noted that coercive success is seldom an all or nothing proposition. 1 In addition to this oversimplication of winning and losing, coercion is also a dynamic process involving not just the actions of the attacking state but also the responses of the adversary state. These realities of coercive episodes make them difficult to model empirically. In this paper, we make an effort to link battlefield decisions and actions to conflict outcomes. In recent decades, the United States has greatly increased its reliance on the use of aerial bombing, employing it in the 1991 Gulf War with Iraq, in the later