This Note presents an analysis of possible actions, such as force movements and communications, the United States might take to deter the Soviet Union or other powers during a variety of crisis situations. The analysis examines contingencies and options by using a framework that identifies possible superpower roles and distinguishes among different stylized phases of crisis and conflict. This framework posits and develops three alternative superpower roles: (1) the "True Believer"--an actor in a historic, ideological struggle between Soviet Marxism-Leninism and Western capitalistic liberal democracy; (2) the "Competitor" — a pursuer of national interests in the framework of competing blocs and alliances organized around the great powers and subject to nuclear-era constraints; and (3) the "Stabilizer" — seeking to maintain relative order and to contain risks. The analysis posits four phases in conflict scenarios: opening, posturing, engagement, and concluding. The analysis includes a consideration of the impact of Soviet deterrence actions on the United States and the impact of both U.S. and Soviet deterrence actions on other parties.