Book Review: Shared Obligations in International Law by Natasa Nedeski

Natasa Nedeski’s Shared Obligations in International Law is a careful, conceptually ambitious monograph that fills an important gap in contemporary international-law scholarship by moving the debate about “shared responsibility” onto the terrain of primary obligations. Building on the SHARES research project, the book develops a positive-law concept of “shared obligations,” offers a systematic typology (most importantly: divisible vs. indivisible shared obligations), and maps the doctrinal consequences of this typology for performance, attribution and the secondary obligations of cessation and reparation. The argument is meticulously argued, richly illustrated with instructive case studies (Nauru, Eurotunnel, the Kyoto commitments, the Marshall Islands cases and others), and closely attentive to the ILC materials and the broader architecture of the law of obligations. The book’s chief value is conceptual clarity: by foregrounding the structure of the primary legal duty the author is able to show—persuasively—that how a duty is shared shapes who can be held responsible, what remedies follow, and how claims should be framed in adjudication. The monograph is essential reading for scholars, judges and practitioners interested in multilateral governance and international responsibility.