Grounded in a methodology of discourse analysis, semi-structured interviews and participant-observation, this thesis examines ‘climate justice’ as a discourse articulating with other discourses, deploying certain imaginative geographies, and enfolding fundamental questions of power, race and identity in the ‘international’. In a break with accounts that take a prescriptive or essentialist approach to ‘climate justice’, I argue that Judith Butler’s conception of performativity is a framework allowing a full appreciation of the heterogeneity and contingency of ‘climate justice. My first argument appraises the liberal ‘international’ as a racialised order of governance’. Specifically, it argues that ‘climate justice’ – in context-specific instances – embodies and perpetuates whiteness, understood as an historically and geographically differentiated form of signifying power. From here, I argue that some ‘climate justice’ discourses embodying ‘international climate whiteness’, which I understand as an historically contingent form of power that operates through a cluster of institutional arrangements, discourses and affects that serve the reproduction of a liberal international order. In my second argument, I demonstrate how the ‘most vulnerable’ are positioned as a mobilising device on whose behalf the less-vulnerable are to demand ‘action’ from their political representatives. Moreover, I argue that a primary instrument for the securing of this moral economy is the idea of a ‘new narrative’ of climate change; one that reframes it as a ‘people-centred’ as well as an ‘environmental’ issue. Third and final, I argue that over the past ten years, there has been a shift in international climate policy discourse towards seeing climate change in ‘human’ as opposed to simply ‘environmental’ terms. Further, I go beyond this observation to argue that an analysis of ‘climate justice’ discourse allows us to see how the ‘human’ – and humanism – are in the process of adapting to climate change.