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This guide provides a series of structured 'Litigation Notes' designed to help legal practitioners integrate the findings of the International Court of Justice's (ICJ) July 23, 2025, Advisory Opinion (AO) on States' obligations regarding climate change into domestic, regional, and international court cases. The document breaks down the ICJ AO by key themes—including government framework cases, adaptation, remedies and reparations, the right to a healthy environment, corporate conduct, climate financing, speculative interventions, and regulatory rollbacks—providing specific excerpts from the opinion and illustrating their application through existing and potential litigation categories.

This briefing note by the Center for International Environmental Law (CIEL) analyzes the International Court of Justice's (ICJ) July 2025 Advisory Opinion (AO) on climate change. It specifically examines how the AO's findings on State obligations—including the duty to prevent harm, stringent due diligence, and the precautionary principle—can be used to challenge reliance on speculative climate interventions (such as geoengineering and carbon capture) and offset-based mitigation measures that may delay the phase-out of fossil fuels.

This briefing note analyzes the implications of the International Court of Justice's (ICJ) July 2025 advisory opinion on States' obligations to prevent environmental harm, specifically focusing on the financing of climate-destructive conduct. It outlines how the ICJ's findings can be used in litigation to challenge public and private funding of the fossil fuel sector and to enforce obligations for climate finance in developing nations.

This briefing, produced by a coalition of climate litigation practitioners, provides structured 'Litigation Notes' to help lawyers integrate the International Court of Justice's (ICJ) July 23, 2025, advisory opinion (AO) on States' climate obligations into legal cases. This specific note focuses on corporate conduct, detailing how the ICJ AO establishes State duties to regulate private actors, particularly in the fossil fuel industry, to prevent significant environmental harm.

This briefing, published by the Center for International Environmental Law (CIEL) and partners, provides a structured 'Litigation Note' to help legal practitioners apply the International Court of Justice's (ICJ) July 23, 2025, advisory opinion (AO) on States' obligations regarding climate change. The document focuses specifically on the legal frameworks for remedies and reparations, detailing how the ICJ AO clarifies State responsibility for internationally wrongful acts related to climate harm and how these findings can be integrated into domestic, regional, and international litigation against both States and corporate actors.

This litigation note, published by the Center for International Environmental Law (CIEL) in February 2026, provides a guide for legal practitioners to integrate the International Court of Justice's (ICJ) July 23, 2025, advisory opinion (AO) on climate change into government framework litigation. It specifically focuses on 'Ambition Gap' and 'Implementation Gap' cases, detailing how the ICJ's findings on Nationally Determined Contributions (NDCs), due diligence, and human rights can be used to challenge insufficient government climate policies.

This briefing, produced by a coalition of climate litigation practitioners, provides structured 'Litigation Notes' to help lawyers apply the International Court of Justice's (ICJ) July 23, 2025, advisory opinion (AO) on States' climate obligations. Specifically, this note focuses on the ICJ's conclusion that the right to a clean, healthy, and sustainable environment is a binding norm of international law and a necessary precondition for the enjoyment of other human rights.