Public international law sources (hereinafter international law or DIP) are binding for states mediating their consent. In the case of the main sources of DIP, namely treaties, customary, unilateral legal acts and general principles of law, it is clear the need for mandatory consent for its compulsoriness. Regarding the sentences of international tribunals, and according to Article 59 of the Statute of the ICJ, its obligation is, according to explicit text, binding to the states involved in the controversy addressed by the sentence that resolves it. Which expands to the entire judiciary in the international arena. In this paper the obligation will be discussed, namely, the character of source of law for the content of the judgments of the Inter-American Court of Human Rights (hereinafter the Court or CIDH), for those states not part to the dispute: effect erga omnes  the judgments of the Court.