de La Pradelle, Paul Keywords: Sea | Space | Territory | Mots clefs: Espace maritime | Espace cosmique | Territoire | ABSTRACT Paul de La Pradelle, Honorary Professor at the Law School of Aix-Marseille, notes that territory-space conflicts, or territorial and spatial interests, concern complex situations to which actors and factors are difficult to find the solutions. In the introduction, the author recalls the fundamental principles generally accepted as being capable of establishing the respective definitions of th…