It feels good to be a global citizen after seeing another step toward collective action on climate change. On May 20, 2026 a majority of United Nations member nations voted to endorse the resolution of the International Court of Justice (ICJ) requiring greater accountability in meeting their climate obligations.
The key elements of the UN endorsement are:
- The mandate: It formalizes the ICJ’s ruling as the definitive “roadmap” for international law regarding climate change.
- Accountability framework: It demands that states comply with their strict climate obligations and establishes that failing to do so carries legal consequences.
- Fossil fuel transition: It reinforces political demands for a rapid, just, and equitable transition away from fossil fuels.
- Continuous oversight: It directs the UN Secretary-General to prepare a progress and compliance report in 2027 and places the ICJ opinion firmly on the General Assembly’s agenda for 2028.
The endorsement was carried 141 to 8, with 28 abstentions. The nations voting against the endorsement included the U.S., Russia, Iran, and Israel. The New Zealand Government voted for the endorsement. Just eight days earlier, on May 12, despite direct advice from justice officials to let the legal process run its course, the coalition government intervened by announcing plans to amend the Climate Change Response Act 2002 to retrospectively bar civil climate lawsuits, effectively shutting down Mike Smith’s landmark Supreme Court-approved case against major corporate polluters before it could go to trial next year.
The back story
It all began with a group of law students from Vanuatu. Here is a timeline.
2019: Frustrated by the slow pace of UN climate summits (COPs) while their home islands faced severe threats from rising sea levels and devastating cyclones, 27 law students from the Vanuatu campus of the University of the South Pacific formed a group called Pacific Islands Students Fighting Climate Change (PISFCC). Instead of just protestinging, they decided to target the world’s highest legal authority: the ICJ. They convinced the government of Vanuatu to champion their cause. From there, Vanuatu built a massive cross-regional diplomatic coalition at the UN. Under the previous government, New Zealand was an early, enthusiastic champion and officially co-sponsored the initial UN request.
March 2023. The UN General Assembly voted unanimously to ask the ICJ for an “Advisory Opinion” on climate change. After years of preparation and emotional testimonies from frontline youth communities, the ICJ delivered its historic ruling in July 2025.
July 2025. The Court ruled that:
- A Legal Duty, Not a Choice: Protecting the climate system from greenhouse gas emissions is a binding obligation under international law, human rights law, and the Paris Agreement.
- Human Rights Link: A clean, healthy environment is a prerequisite for human rights. Damaging the climate directly violates citizens’ rights to life, health, and a livelihood.
- Legal Consequences: Countries that breach these obligations and cause significant transboundary climate harm can be held legally responsible and may be required to pay reparations.
While the ICJ’s 2025 ruling was historically profound, advisory opinions are not automatically binding or self-executing. To further validate the ruling politically, Vanuatu and a core group of climate-vulnerable states drafted a UN resolution to operationalise it.
20 May 2026. The resolution was endorsed
More momentum
The UN endfollows the First International Conference on Transitioning Away from Fossil Fuels, which took place in the coastal port city of Santa Marta, Colombia, from April 24–29, this year. During the COP30 summit in Belém, Brazil, a large bloc of around 80 climate-vulnerable and progressive nations fought hard to include a concrete, time-bound “roadmap” to phase out oil, gas, and coal in the final text. However, because UN climate agreements require unanimous consensus, a handful of powerful petrostates and major emitters effectively vetoed the language.
Refusing to let the momentum die, the governments of Colombia and the Netherlands staged a diplomatic rebellion. Right there at COP30, they announced they would co-host a parallel “conference of the willing” in Santa Marta to tackle fossil fuel extraction head-on, free from the threat of a single-country veto.
The Santa Marta conference is being hailed as a major success because it provided a blueprint for “two-tier multilateralism.” It proved that progressive countries do not have to wait for global consensus at COPs to start implementing aggressive climate policies.
Furthermore, the event explicitly linked its mission to the ICJ’s historic Advisory Opinion, emphasising that transitioning away from fossil fuels is now an active legal obligation under international law. The outcomes from Santa Marta are currently fuelling a rapidly growing diplomatic push for a formal, legally binding Fossil Fuel Non-Proliferation Treaty, with a second follow-up summit already scheduled to take place in the Pacific Island nations to keep the pressure mounting.
Margaret Mead famously said “Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it’s the only thing that ever has.” It is a fitting quote for the story of the 27 law students from Vanuatu who managed to ignite a global legal movement at the United Nations!
