This article discusses the access to justice, perceived as a human right. It is argued that this fundamental right is now part of today’s jus cogens. The idea of jus cogens can be a highly beneficial tool for sanctifying the existence of a normative hierarchy in the international arena, which is traditionally viewed as a set of purely horizontal relations between states. As soon as a norm or a principle acquires the character of jus cogens, it obliges the entire international community, requiring states to adapt their laws and legal practice.

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