Pacific island nations including Tuvalu, Kiribati, and the Marshall Islands are facing the prospect of becoming uninhabitable within decades as sea level rise combines with storm surge intensification to render low-lying atolls increasingly vulnerable to inundation. Tuvalu has already concluded a treaty with Australia that provides its population with a pathway to Australian residency and citizenship if their homeland becomes uninhabitable.
The diplomatic implications are profound. Tuvalu has raised the question of whether a nation can retain its UN membership, exclusive economic zone rights, and treaty obligations after its territory is no longer habitable. International law has no precedent for the disappearance of a state due to environmental rather than political causes. The affected governments are demanding climate compensation from major historical emitters and the establishment of legal frameworks that would preserve their national identity even as their physical territory is lost.
