Inter-American Court of Human Rights (IACtHR)

Climate Policy Brief 30, 18 November 2025

The Role of Advisory Opinions in Shaping International Climate Change Law

By Daniel Uribe Terán

This policy brief analyses how advisory opinions (AOs) from the International Court of Justice (ICJ), the International Tribunal for the Law of the Sea (ITLOS), and the Inter-American Court of Human Rights (IACtHR) are fundamentally reshaping international climate law. These AOs are crystallising States’ climate commitments, transforming them from voluntary political pledges into binding legal obligations grounded in customary international law and human rights. This judicial shift establishes stringent, science-based due diligence standards, confirms State responsibility for harm, and provides a powerful legal foundation for accountability and reparation.

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SC Submission to IACtHR, December 2023

Corte Interamericana de Derechos Humanos

Solicitud de Opinión Consultiva presentada por la República de Chile y la República de Colombia

Observaciones remitidas por el Centro Sur

Diciembre de 2023

In reference to the invitation extended by the Inter-American Court of Human Rights to submit amicus briefs in the matter of the Request for Advisory Opinion submitted by the Republic of Colombia and the Republic of Chile to the Inter-American Court of Human Rights (IACtHR or the Court) regarding the Climate Emergency and Human Rights. The South Center, an intergovernmental organization of developing countries, respectfully submits to the Inter-American Court of Human Rights the following amicus brief at the request of the Advisory Opinion submitted by the Republic of Chile and the Republic of Colombia.

These observations consider how the definition of shared and differentiated obligations and responsibilities in the legal regime related to climate change is linked to the obligations to cooperate and make reparations arising from the American Convention on Human Rights and the need to consider the right to life and survival of the most affected regions and populations in the various countries and in the region.

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