Recent theories of territorial rights could be characterized by their growing attention to environmental concerns and resource rights (understood as the rights of jurisdiction and/or ownership over natural resources). Here I examine two: Avery Kolers’s theory of ethnogeographical plenitude, and Cara Nine’s theory of legitimate political authority over people and resources. While Kolers is a pioneer in demanding ecological sustainability as a minimum requirement for any viable theory of territorial rights – building a bridge between environmental and political philosophy – (...) Nine highlights a crucial distinction when looking at territorial rights from a global justice perspective, namely that between jurisdictional powers and ownership rights over resources. Daring and innovative at first glance, I claim that both theories present, however, deep ambiguities and retreat from their radical implications which, if taken seriously, would lead to a massive redrawing of current territorial borders. (shrink)