La Protección Jurídica de las Misiones Diplomáticas ante el Colapso del Estado Anfitrión

Review: "The Legal Protection of Diplomatic Missions in the Event of Host State Collapse" by Andrés CosiallsBoletín CODESEL, Vol. 1, No. 2, 2025 Dr. Andrés Cosialls presents a rigorous and conceptually rich analysis of one of the most pressing challenges in contemporary international law: the legal status and protection of diplomatic missions when the host state ceases to function. In this highly relevant and well-structured article, Cosialls interrogates the limits of the Vienna Convention on Diplomatic Relations (1961) and explores how traditional assumptions about state responsibility are destabilized in contexts of governmental collapse, internal conflict, and the rise of non-state actors. The article’s central thesis is clear: the inviolability of diplomatic missions—one of the bedrocks of the international system—presupposes the existence of a functioning host state capable of upholding its conventional duties. In scenarios where such a state no longer exists in practice, as in Afghanistan post-2021 or Somalia in the early 1990s, the normative framework enshrined in Article 22 of the Vienna Convention becomes operationally vacuous. Cosialls insightfully notes that this legal void does not extinguish the obligations but transforms them into “abstract duties,” normatively intact but materially impossible to fulfill. A significant contribution of this work lies in its meticulous exploration of how international legal doctrine and state practice have adapted to this impasse. Cosialls draws upon leading doctrinal authorities (Brownlie, Shaw, Denza) and relevant case law (notably Nicaragua v. United States, ICJ 1986) to argue that the principle of state continuity keeps diplomatic obligations alive even during collapse or revolution. He further analyzes the controversial doctrine of the “collapsed state,” critiqued for undermining sovereign equality yet invoked to justify exceptional measures of self-help, including unilateral evacuations and extraterritorial protective operations. The article shines in its empirical richness. Case studies from Libya, Sudan, Venezuela, and Afghanistan are deftly examined to show how accrediting states, in the absence of reliable host protections, have relied on military intervention, private security, and digital consular services. Particularly striking is the nuanced discussion of coordination mechanisms—such as EU joint evacuations and Gulf Cooperation Council security protocols—which, though not explicitly codified in the Vienna Convention, reflect an emergent customary practice grounded in interstate cooperation. One of the article’s strengths is its subtle treatment of non-state actors. Cosialls does not simplistically dismiss these entities as mere spoilers but analyzes how, under certain conditions, they seek international legitimacy through respect for diplomatic norms. However, the article rightly warns against over-relying on such pragmatic expectations, given the inconsistencies and strategic calculations involved, exemplified by the Taliban’s erratic conduct toward foreign missions. The essay concludes with a powerful reflection on the shifting geometry of diplomatic protection. In situations where the reciprocity and host-state guarantees underpinning the Vienna regime no longer apply, a new paradigm of collective and adaptive protection emerges—anchored in regional alliances, humanitarian law, and the evolving normative expectations of state conduct. Cosialls does not offer facile solutions, but his clear-eyed exposition of the legal dilemmas and doctrinal evolutions offers a compelling roadmap for further academic inquiry and policy development. Overall, “La Protección Jurídica de las Misiones Diplomáticas ante el Colapso del Estado Anfitrión” is a scholarly and timely contribution that enriches our understanding of how international law responds to the erosion of state authority. It is essential reading for jurists, diplomats, and international relations practitioners navigating the increasingly volatile terrain of global diplomacy.