Erga omnes
International law

In international law, it has been used as a legal term describing obligations owed by states towards the community of states as a whole. An erga omnes obligation exists because of the universal and undeniable interest in the perpetuation of critical rights and the prevention of their breach. Consequently, any state has the right to invoke state responsibility in order to hold the responsible state legally liable and required to pay reparations. Erga omnes obligations attach when there is a serious breach of peremptory norms of international law like those against piracy, genocide and wars of aggression. The concept was recognized in the International Court of Justice 's decision in the Barcelona Traction case:
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