This paper examines if, when, and how states act to manage militarized disputes. I argue that the relationship between the third party and disputants, the management history, and the characteristics of the conflict help us understand when management occurs and the management techniques employed. I find substantial evidence that biased third parties are quick to offer management services and to employ economic and diplomatic techniques. Conditions that increase the perceived probability of conflict resolution, such as previous conflict management, and factors that lower the cost of conflict management, such as costly conflict, lead to the timely use of diplomatic and verbal techniques. The findings offer significant contributions to both the conflict management and alliance literatures.In 1905, President Theodore Roosevelt met with Russian and Japanese delegates to discuss the Russo-Japanese War, finally mediating after over a year of fighting and an estimated 130,000 casualties (Morris 2001). Conversely, Roosevelt acted immediately when France and Germany collided over the division of Morocco (Roosevelt 1985). While some conflicts, like that between France and Germany, are managed early on, other disputes, such as the Russo-Japanese War, must wait for outside management to occur. Still other conflicts never involve the international community at all. Although the Roosevelt presidency was marked by an active approach to foreign policymaking, 2 the very nature of the foreign policy decision process involves trade-offs, leaving some disputants to resolve differences on their own. Recently, the conflicts of Yugoslavia, Rwanda, and Sudan continued for prolonged periods without significant intervention despite extensive violence. Why did these conflicts continue while the international community took action in other conflicts before they turned deadly? Is there a systematic explanation of which conflicts receive the interest of outside parties and the timing of conflict management activities? two anonymous reviewers for their helpful comments. The participants of the Journeys in World Politics workshop and members of the Working Group on Conflict Prevention also provided helpful suggestions. Sara McKeever, Andrea Morrison, and Jacob Hogan provided valuable research assistance. The Folke Bernadotte Academy provided financial support for the project.2 Roosevelt saw it as the duty of developed nations to help the underdeveloped world move forward. In Cuba, the Philippines, Puerto Rico, and the Panama Canal Zone, he used the army's medical service to eliminate the menace of the yellow fever and install a new regime of public health. He used the army to build up the infrastructure, building railways, telegraph and telephone lines, and upgrading roads and port facilities.