International Court of Justice to issue landmark climate opinion

Wednesday 23 July 2025 - 08:15

The Hague, July 23, 2025 – The United Nations' highest judicial body, the International Court of Justice (ICJ), is expected to deliver a groundbreaking advisory opinion on Wednesday regarding states' legal obligations to combat climate change. A central issue at stake: should historically high-polluting nations be held accountable for environmental damage?

Described by legal experts as the most significant case the ICJ has ever addressed, the proceedings were initiated in 2019 by students from the Pacific island nation of Vanuatu. The campaign gained global traction after a United Nations General Assembly vote in favor of requesting the court's legal guidance.

Though non-binding, the ICJ’s opinion—set to be announced at 3:00 p.m. local time—could set a powerful precedent, influencing national and international laws on climate justice for years to come.

“Climate change is not just theoretical—we live it every day,” said Vishal Prasad, a 29-year-old Fijian student who helped launch the initiative.

The case asks the court to interpret states’ international legal obligations regarding the reduction of greenhouse gas emissions and to consider the legal consequences for those whose emissions have caused harm, particularly to vulnerable low-lying island nations.

The court held its largest hearings ever in December 2024 at the Peace Palace, where representatives from both developing and developed nations presented arguments. Wealthy, high-emission countries like the United States and India defended the existing COP process, warning against bypassing political frameworks. In contrast, smaller nations demanded climate reparations and a legally binding pathway to phasing out fossil fuels.

Margaretha Wewerinke-Singh, representing Vanuatu, emphasized: “The core principle is crystal clear. Those responsible must fully repair the harm they have caused.”

Some countries, like Tuvalu—responsible for less than 0.01% of global emissions—face existential threats. “At this rate, Tuvalu will disappear completely under the sea,” warned its representative, Eselealofa Apinelu.

Critics argue that the ICJ opinion will be ignored by major polluters. But according to Andrew Raine of the UN Environment Programme, “International law evolves through such rulings. They clarify how legal principles apply to the climate crisis, influencing courts, legislatures, and public policy.”

The outcome could mark a turning point in the global climate accountability debate.