Passes First Declaration on Sea Level Rise, Protecting Island Nations' Sovereignty

World leaders approved a unanimous UN General Assembly resolution on handling sea level rise without changing national borders, a rare win for multilateralism amid broader U.S. friction on climate cooperation. The measure preserves the sovereignty of small island states even if land disappears. Countries such as Tuvalu and the Marshall Islands face near-total inundation over the next century, but the declaration affirms they remain political actors. It also protects maritime zones—sea areas extending from shore under a country’s exclusive control for fishing, energy development, and other activities. The text results from efforts by the Alliance of Small Island States and builds on earlier international rulings. Officials say it transforms prior legal “presumptions” into an explicit affirmation.