Juridical Singularity in International Law Systemic Collapse, Normative Tabula Rasa, and Legal Reconstruction beyond Plural Sovereignty 1. Conceptual Framework and Scope This working paper develops the doctrine of Juridical (Legal) Singularity as a structural limit inherent in public international law. The analysis proceeds from the foundational premise that international law is not merely empirically pluralistic but normatively dependent on the continued existence of multiple sovereign legal subjects. Juridical singularity denotes the point at which this constitutive plurality collapses entirely. Legal singularity is defined as the point in time at which the entire pre - existing international legal system ceases to exist as international law. It arises when all states and derivative subjects of international law consolidate legal personality, sovereignty, treaty capacity, and jurisdiction into a single universal juridical entity. At that moment, international law no longer functions as a horizontal normative order between sovereigns but is absorbed into the internal legal order of a global sovereign, leaving no operative legacy obligations recognizable under treaty or customary law. 2. Doctrinal Anchoring in the Vienna Convention on the Law of Treaties The paper demonstrates that juridical singularity does not require revolutionary or extra-legal assumptions. Rather, it can be reconstructed doctrinally from the internal logic of the Vienna Convention on the Law of Treaties (VCLT 1969) itself. Central reference points include: Article 2 VCLT: treaties are defined as agreements “between States,” establishing juridical plurality as a structural prerequisite. Article 26 VCLT (pacta sunt servanda): binding force presupposes distinct parties capable of holding each other accountable. Article 29 VCLT: treaties apply to the entire territory of a party, enabling expansive interpretations of territorial scope. Article 30 VCLT (lex posterior): later treaties or supplementary instruments may absorb and supersede entire treaty chains. Articles 3 and 20 VCLT: implied consent, tacit acceptance, and estoppel operate independently of formal ratification. Through these mechanisms, a final supplementary instrument (Nachtragsurkunde) may function as a juridical consolidation device, absorbing all prior treaty networks without requiring renewed consent by each affected state. 3. Network-Based Territoriality and Juridical Consolidation A central analytical contribution of the paper is the introduction of network-based territoriality as a doctrinally relevant extension of Article 29 VCLT. When infrastructure systems - such as electricity grids, telecommunications backbones, pipelines, or data cables - are transferred “as a unit,” sovereignty propagates along physically integrated networks. Because modern infrastructure operates as indivisible systems, territorial scope expansion cannot be localized. Instead, a cascading domino effect emerges, transforming localized state succession into comprehensive global juridical consolidation. The paper demonstrates that this mechanism is not speculative but derives from existing treaty interpretation principles, including effet utile and good faith interpretation. 4. Systemic Consequences for the Sources of International Law Once juridical singularity is reached, all sources of international law under Article 38(1) of the ICJ Statute become structurally inoperative: Treaties collapse due to identity of parties. Customary international law loses both state practice and opinio juris. Jus cogens norms lose their constitutive anchor in an international community of states. International organizations lose derivative legal personality absent member states. International jurisdiction becomes logically impossible without multiple subjects. The legal singularity thus marks a systemic reset point: a condition of normative tabula rasa in which law can be rethought and reshaped without inherited legacy constraints. 5. Orientation and Theoretical Significance Analogous to the technological singularity, legal singularity is presented as the only internally coherent legal response to a world shaped by exponential technological development, global network integration, and disruptive transformation. The paper does not argue for political desirability or empirical imminence. Its purpose is strictly doctrinal and theoretical: to expose the structural contingency, vulnerabilities, and ultimate boundaries of the international legal order. As a limit-case analysis, the doctrine of juridical singularity clarifies not only how international law might end, but also why it exists - and under which conditions it cannot. Legal Singularity The Systemic Termination of the Existing Legal Order and the Constituent Reset of Law in an Era of Exponential Technological Transformation: “The legal singularity is the point in time at which the entire previous legal system ceases to exist. It offers the opportunity to rethink and reshape the law without any legacy issues.” “Just as the technological singularity challenges established structures, the legal singularity emerges as the only coherent response to a world shaped by exponential technological development and disruptive transformation.”