This article examines the theoretical and practical foundations for recognizing sanctions and restrictive measures as an autonomous branch of international law. Through comprehensive analysis of legal doctrine, state practice, and institutional frameworks, this study argues that the proliferation, systematization, and juridification of sanctions regimes have reached a threshold warranting their recognition as a distinct legal discipline. The article explores the doctrinal foundations, normative characteristics, institutional mechanisms, and procedural frameworks that collectively constitute what may be termed “International Sanctions Law.” The research methodology encompasses comparative legal analysis, doctrinal examination, and empirical assessment of contemporary sanctions practice across multiple jurisdictions and international organizations.