This chapter seeks to locate some of the discussions within this volume in the context of more general debates about the nature of sovereignty and the current challenges that it faces. In so doing, it draws on some of the thinking behind and within a major Australian-Canadian project on “Re-conceiving Sovereignty” involving the Institute for Ethics, Governance, and Law at the United Nations University and The Centre for International Governance Innovation.1 Within that context, it considers one particular challenge arising from health issues-the training, movement, and regulation of health professionals.