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Abstract‘Legitimacy’ is commonly cited as one of three fundamental mechanisms of social control within both domestic politics and international society. However, despite growing attention to the legitimacy of global governance, little consideration has been given to the identity of the political communities that must grant legitimacy to an international organisation or to the conditions under which legitimacy is valuable for the functioning of that organisation. In raising and responding to these questions, this article rejects the argument that actors must gain legitimacy among all subject social constituencies within their political realm of action. Instead, the importance of legitimacy within a particular constituency is a variable. The article labels this variable a ‘legitimacy nexus’ and outlines five factors that are hypothesised to contribute to calibrating a legitimacy nexus. The plausibility of the proposed schema is explored through discussion of the role of legitimacy in the trade regime and analysis of the origins of the International Labour Organization's anomalous tripartite representative structure.

International norm polarization is a rare but recurring process within international norm dynamics. Polarization describes the most combative response to attempted norm change: ‘a candidate norm is accepted by some states but resisted by others, leading to a period of international disputation between two groups in which socializing pressures pull states toward compliance with rival norms’. We identify several cases of polarization and explain this phenomenon by elaborating the constructivist model of the norm life cycle to processes of international resistance to norm change as well as to norm acceptance. We also draw on social identity theory (SIT) to examine group-psychological responses where disputed norms become closely linked to state identity. We illustrate these dynamics with reference to conflict over the norm that recognizes sexual orientation and gender identity as subjects of international human rights protection. Over the past decade this candidate norm has become increasingly contentious internationally, and bitter debates over resolutions concerning extra-judicial killings and discrimination have divided the United Nations General Assembly and Human Rights Council. The article makes a primary contribution to analysis of international norm change and also contributes to an emerging literature concerning sexuality and international relations.

Accounting rules used for compiling national greenhouse gas inventories play a significant role in constituting the global climate change regime's character. These rules have major political and policy implications. Production-based accounting and national production-based emissions targets contribute to the deadlock in climate negotiations by deflecting attention away from consumption patterns and by accentuating tensions among the climate regime's underlying norms. These dynamics contribute to inefficient domestic mitigation policies, conflict over the norm of “common but differentiated responsibility,” weak international agreements, and continued political neglect of consumption as a driver of emissions. In contrast, consumption-based emissions accounting would shift attention from production to consumption. Consumption-based targets could potentially provide an alternative path by which differentiated responsibility could be implemented. Adoption of consumption-based inventories might also prompt reappraisal of underlying norms and opposing conceptions of justice among states.

Amid growing alarm over the rising atmospheric concentration of greenhouse gases, increasing attention is being given to 'geo-engineering' technologies that could counteract some of the impacts of global warming by either reducing absorption of solar energy (solar radiation management (SRM)) or removing carbon dioxide from the atmosphere. Geo-engineering has the potential to dramatically alter the dynamics of global climate change negotiations because it might cool the climate without constraining fossil fuel use. Some scholars have expressed concern that certain states may be tempted to act unilaterally. This paper assesses the approach that China is likely to adopt towards governance of SRM and the implications this holds for broader international climate negotiations. We survey Chinese public discourse, examine the policy factors that will influence China's position, and assess the likelihood of certain future scenarios. While Chinese climate scientists are keenly aware of the potential benefits of geo-engineering as well as its risks, we find that no significant constituency is currently promoting unilateral implementation of SRM. China will probably play a broadly cooperative role in negotiations toward a multilaterally governed geo-engineering programme but will seek to promote a distinctive developing world perspective that reflects concerns over sovereignty, Western imperialism and maintenance of a strict interpretation of the norm of common but differentiated responsibility.