This e-book publishes part of the proceedings of the second regional conference of the International Law Association that the Portuguese Society of international Law, its Portuguese branch, has organized in the School of Law of the University of Minho in 18-19 September 2019 under the theme “the Contributions of Case-Law of International Courts and Tribunals to the Development of International Law”. The main part of the proceedings of the Conference were published by Brill-Nijhoff, in an edited volume entitled Case-Law and the Development of International Law. The volume of the presentations did not allow to include all the papers in a single publication, but the quality of the texts now included in this e-book made its publication essential.