Oceania | Environment | Oceania

How Tuvalu Is Rewriting the Rules of Statehood

As rising seas threaten its territory, the Pacific nation is leading an unprecedented effort to ensure sovereignty can survive climate change.

A beach at Funafuti atoll, Tuvalu, on a sunny day.

On a narrow strip of coral in the central Pacific, residents of Tuvalu are confronting a question no country has ever had to answer: What happens to a nation if its land disappears?

The issue has taken on new urgency in 2026 as United Nations member states negotiate a landmark Declaration on Sea-Level Rise, scheduled for adoption by the General Assembly in September. The declaration is expected to address the scientific, economic, and legal consequences of rising seas, including questions surrounding statehood and maritime rights. In May 2026, as formal negotiations began in New York, Tuvalu’s Permanent Representative to the United Nations, Ambassador Tapugao Falefou, reaffirmed the country’s position that sea-level rise cannot extinguish statehood, sovereignty, or international legal personality. For Tuvalu, the negotiations represent more than a diplomatic process. They are an opportunity to help shape international norms that could determine the country’s future for generations to come.

The low-lying island nation of about 11,000 people has become a symbol of the global climate crisis. Rising seas are flooding roads, contaminating freshwater supplies and eroding coastlines across the country’s nine atolls. Scientists project that much of Tuvalu could become increasingly difficult to inhabit during this century as sea levels continue to rise. 

But rather than accepting a future of disappearance, Tuvalu is pursuing an ambitious legal and diplomatic strategy to ensure that its sovereignty survives even if climate change transforms its physical territory.

At the center of that effort is a simple but groundbreaking argument: a nation should not cease to exist because of a climate crisis it did little to create.

In 2023, Tuvalu amended its constitution to declare that the country’s statehood and maritime boundaries would remain permanent regardless of sea-level rise. The constitutional changes assert that Tuvalu will continue to exist “in perpetuity” even if climate change affects its physical territory. 

The move represents one of the most significant legal experiments in modern international relations.

For centuries, statehood has generally been tied to territory, but Tuvalu is now helping lead an international effort to establish that sovereignty, citizenship and maritime rights can endure even as coastlines change. At recent United Nations negotiations, Tuvalu’s representatives reiterated that sea-level rise cannot extinguish a nation’s legal existence.  

Tuvalu has also been a prominent voice in negotiations surrounding the proposed U.N. Declaration on Sea-Level Rise. During consultations earlier this year, the country called for stronger recognition of the continuity of statehood, the preservation of maritime rights, and greater international cooperation to address the existential threats facing low-lying island nations. The declaration could become one of the most significant international political statements yet on the legal implications of sea-level rise.

The country’s campaign has already achieved notable successes.

Under the Falepili Union treaty, Australia formally recognized Tuvalu’s continuing statehood and sovereignty despite the impacts of climate-related sea-level rise. The agreement also created a special migration pathway allowing Tuvaluans to live, work and study in Australia, when the treaty entered into force in 2024.

The urgency of that effort is increasingly apparent. Under Australia and Tuvalu’s Falepili Union treaty, more than 90 percent........

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