| Zusammenfassung: | Over the last decade, climate change has increasingly been discussed as a security threat. In this essay, we ask from the perspective of the Copenhagen School, if climate change has been successfully »securitized«. We show that there were many speech acts in the realm of international politics which problematized climate change as a security issue but that hardly anyone adopted extraordinary measures to address it. However, this failed securitization does not mean that climate security discourse did not have any policy implications. We use the case of climate change in order to illustrate some well-known weaknesses of the original Copenhagen School's theory of securitization and demonstrate the added value of theory extensions for our case. From an extended theoretical perspective, we show that climate security discourse presents dangerous levels of climate change as an unchangeable matter of fact. It thereby renders invisible the scope for fighting climate change. Instead, resilience to climate change impacts comes to the foreground. We argue that this is a problematic form of de-politicization as well. Keywords: climate change, securitization, Copenhagen School, environmental security, United Nations. (Zeitschrift für Internationale Beziehungen / SWP)
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