Abi-Saab, Georges Keywords: Public international law | Mots clefs: Droit international public | ABSTRACT Georges Abi-Saab, Professor at the Graduate Institute of International Studies in Geneva, chooses a dual-axis investigation in his general course on public international law in order to present a significant overview of the subject: on one hand, to highlight how international law functions as a legal system, that is, how norms, institutions, and mechanisms articulate with respect to each other to form a wh…