The significance of United States foreign policy has grown in the 20 years since the terrorist attacks of September 11, 2001 and the subsequent 'war on terror' in ways that have been reflected in the development of the academic literature and in the increased level of interest in the subject area. This programme focuses on US foreign policy in the context of national security as well as wider aspects of the country’s foreign policy and its impact in the areas of the economy, international relations, and particularly security. Emphasis is given to critical debates over whether US power is declining and how well equipped the US is to deal effectively with the challenges of contemporary international affairs.