Abstract
This chapter considers the evolution of US policy and practice towards foreign military intervention under Presidents George W. Bush and Barack Obama, and in terms of strategic intent finds no evidence of substantive change. Although the language of the ‘Global War on Terror’ has been replaced by one of a ‘transnational global conflict’ the underlying policy drivers remain the same: America’s security and related interests continue to shape its foreign policy and provide the justification for an exceptionalist interpretation of international law, to the disappointment of those who hoped Obama's election would usher in a new era of strengthened global norms. However, a change in US official thinking is evident in a greater appreciation of the limitations of certain forms of intervention, and in the emergence of alternative policy instruments to deliver US strategic objectives.