UN General Assembly backs landmark ICJ opinion on climate change obligations

The United Nations General Assembly has adopted a resolution welcoming a landmark advisory opinion by the International Court of Justice (ICJ) that strengthens the legal framework governing states’ responsibilities on climate change.

Passed on May 20, 2026, with 141 countries voting in favour, eight against and 28 abstaining, the resolution endorses the ICJ’s July 2025 opinion outlining nations’ obligations to protect the climate system from greenhouse gas emissions.

The ICJ concluded that climate-related duties extend beyond international agreements such as the Paris Agreement and the UN Framework Convention on Climate Change. The court said these obligations are also rooted in customary international law, human rights law, international environmental law and the law of the sea.

In its resolution, the General Assembly urged all countries to fulfil their international climate commitments and act with due diligence to prevent significant environmental damage. It also stressed the need for good-faith cooperation among states and called for measures to safeguard human rights from the growing impacts of climate change.

The resolution further highlighted the legal consequences of failing to meet climate obligations, recalling the ICJ’s finding that breaches may constitute internationally wrongful acts. In such cases, states could be required to halt the offending conduct, provide guarantees against future violations and offer full reparations for any harm caused.

The vote is being viewed as a significant step in reinforcing international accountability on climate action and strengthening the legal basis for future climate-related claims and negotiations.