What UN’s endorsement of the ICJ Advisory Opinion on climate Change mean for Africa

By Patrick Edema

The United Nations General Assembly (UNGA) adopted a historic resolution endorsing the International Court of Justice’s (ICJ) landmark Advisory Opinion on climate change, creating a powerful, albeit complex and new legal weapon for developing nations. For Africa, a continent that contributes less than 3% of global greenhouse gas emissions yet suffers some of the harshest droughts, floods and heatwaves, the vote on May 20, 2026, has been met with both cautious celebration and a sharp dose of political realism.

The resolution, spearheaded by Vanuatu and a cross-regional core group including Kenya and Burkina Faso, passed with 141 votes in favor. But the divisions were stark. While the General Assembly welcomed the ICJ’s finding that climate destruction violates international law, Africa watched as major polluters like the United States, Saudi Arabia, Iran and Russia voted “No,” and crucially, saw one of its own economic powerhouses, South Africa abstain.

For the 1.4 billion people across the continent, the resolution transforms a dry legal text into a potential roadmap for survival, accountability and what many are calling climate justice. To understand what this means, one must look back to July 2025. In a unanimous opinion, the ICJ declared that states have binding legal obligations beyond the voluntary United Nation Framework Convention on Climate Change (UNFCCC) and the Paris Agreement to prevent greenhouse gas emissions and protect the environment.

More importantly for Africa, the Court confirmed the principle of Common but Differentiated Responsibilities and Respective Capabilities (CBDR-RC). This is not just diplomatic jargon. The affirmation of this principle as part of customary international law, the Court legally recognized that developed nations, having industrialized for two centuries, have a greater responsibility to cut emissions and finance the transition than developing nations such as those in Africa.

The Court observed that the most developed States have contributed significantly to the overall amount of GHG emissions. In contrast, the least developed States have contributed only minimally. This legal distinction is critical for Africa. It dismantles the argument that all nations are equal in the climate crisis. The UN resolution now operationalizes this finding, calling on states to comply with obligations as identified by the Court, which includes phasing out fossil fuel subsidies and providing reparations for harm caused.

One of the greatest diplomatic victories hidden within the resolution is the rejection of the lex specialis argument, the previous insistence by wealthy nations that climate disputes must only be resolved under the UNFCCC and Paris Agreement frameworks. For African negotiators, this is a game-changer. Previously, if a drought in the Sahel wiped out livelihoods, legal recourse was limited to the goodwill of polluting nations. Now, the ICJ and the UNGA have opened the door to argue human rights violations under international law, the law of the sea and environmental treaties.

Yet, the narrative of a united Global South hiding a fatal flaw. In a move that surprised many delegates, South Africa abstained from the vote. While the government of Cyril Ramaphosa welcomed the ICJ opinion, it argued that the final UN resolution text had been “watered down” in ways that harm the continent. According to the Department of International Relations and Cooperation (DIRCO), the final draft fails to explicitly recognise the unique vulnerability of African countries and dilutes the obligations of developed economies by selectively interpreting the Court’s findings.

South Africa’s stance highlights a persistent fear among African nations that in the rush to secure a resolution, the specific demands of the continent including debt cancellation tied to climate, access to non-loan-based grant funding, and technology transfer were traded away to secure the resolution votes. For a continent already spending three times more on external debt service than it receives in climate aid, the resolution feels incomplete without concrete financial mechanisms.

However, beyond the halls of the UN, the resolution signals a coming storm for corporations operating in Africa. The ICJ’s opinion, now endorsed by the UNGA, clarified that states are responsible for the actions of companies under their jurisdiction. This paves the way for carbon major litigation. African nations or civil society groups could potentially sue multinational corporations or their home states for environmental damage caused by oil spills or pollution from coal plants under the banner of human rights law.

Furthermore, while the ICJ opinion has landed, the continent is still awaiting a separate, potentially more radical Advisory Opinion from the African Court on Human and Peoples’ Rights. Petitioners have asked the African Court to go beyond the 1.5°C global target, arguing that this threshold is a political compromise that fails to protect a continent already boiling at current temperatures.

For the average farmer in Uganda, or pastoralist in Kenya, the UN resolution changes nothing tomorrow. The rains may still fail and the floods may still come. But legally, the tectonic plates have shifted. The UNGA resolution gives the ICJ’s opinion teeth by anchoring it in a political instrument that diplomats and lawyers can wield in climate negotiations.

For Africa, this resolution is the legal argument to force that end though the fight to turn words into compensation and survival is only just beginning.

The writer is an Environmental Engineer and Energy analyst