In light of the constitutional-like principles embedding International Investment Law and their inextricable link to Domestic Law in the delineation of rights, obligations and disputes, this thesis extensively addresses the interplay between Domestic and International Law along the aforementioned stages. Both the creation of Domestic Law and the engagement in International Law constitute forms of State sovereignty. In this regard, the assorted constitutional frameworks and international obligations coexisting since the beginning of the Ecuadorian Republic have shaped the State’s sovereign space.

How boundaries are set between Domestic and International Law has rested upon the assumption that the former is not permeated by the latter, as both would operate in different levels disregarding that such interaction affects the final addressees of such rules: citizens.