This chapter considers the evolving relationship between the Antarctic Treaty System (ATS) and international law and, in particular, examines the potential relevance of global principles and universal values to the operation, functioning and, most of all, the continued integrity (or security) of the ATS within the global normative framework. The chapter will suggest that embedding external ideas - such as fairness, sustainability and justice - within the ATS regime will not provide a panacea to ongoing concerns about the legitimacy of the ATS, however they can assist in securing the long-term viability of the regime within international law. In short, such principles are not ipso facto truths but rather they are political devices by which t...