Tuvalu’s Prime Minister Feleti Teo addressed the UN General Assembly on Friday. urge strong global action to curb sea level rise and welcome the United Nations endorsement of the Political Declaration on Sea Level Rise.
The landmark agreement officially recognizes the continuity of statehood and the permanence of maritime boundaries established under the United Nations Convention on the Law of the Sea (UNCLOS)This sets an important legal precedent for climate-vulnerable island states facing loss of territory.
In his speech to the international assembly, Teo emphasized the legal significance of the agreement:
The Explanation Reaffirms that Tuvalu’s nationality is non-negotiable, that our maritime rights cannot be erased, and that our people should never be forced to choose between their homeland and their future
The low-lying Pacific island nation of Tuvalu is extremely vulnerable global climate changewith the most populous atolls being just two meters above sea level. Rising sea levels, coastal erosion and increased weather events increasingly threaten to flood the country’s limited land area by the end of the century. Although Tuvalu contributes minimally to global carbon emissions, its precarious geography forces its citizens and government to navigate unprecedented challenges in terms of physical preservation and national identity.
The bilateral mobility pathway is in line with the Australia-Tuvalu Falepili Union 2023, which has established legal mechanisms for Tuvaluans to access residency, healthcare and education in Australia in the face of rising sea levels. More than a third of Tuvalu’s population has applied for climate mobility visas under the deal, underscoring the urgent domestic pressure behind Prime Minister Teo’s UN speech. Importantly, Article 2 of the treaty commits both nations to preserving Tuvalu’s rule of law and sovereignty despite environmental shifts.
Small island states Countries such as Tuvalu, Kiribati and the Marshall Islands face an existential threat to their territorial integrity as global sea levels continue to rise accelerate. To protect their sovereign rights, affected states claim that the baselines and maritime zone boundaries established under the UN Convention on the Law of the Sea remain permanent despite physical coastline changes. In addition, expert bodies such as the International Law Commission (ILC) and the International Court of Justice (ICJ) have highlighted broad consensus among the states that support it uninterrupted continuity the rule of law.
The adoption of the Declaration by UN member states creates the crucial presumption in customary international law that loss of physical land is not the case erase national sovereignty. By securing an international legal consensus on permanent statehood, low-lying island states guarantee their ongoing rights to govern, maintain UN membership and protect their exclusive economic zones. Looking forward, Pacific leaders plan to leverage this consensus at upcoming climate summits to pursue binding legal treaties and expand global financing mechanisms for adaptation.
This groundbreaking consensus marks a decisive shift in international law and signals that statehood and sovereign rights exist no longer exclusively bound to the habitable land area. As low-lying states navigate the twin challenges of physical adaptation and legal protection, the international legal framework now provides a stable foundation to protect vulnerable populations and maintain territorial integrity well into the future.
