Westphalian state model is a foundational academic concept and analytical framework within international relations scholarship. It investigates the principles underpinning the modern international system, particularly state sovereignty, territorial integrity, and the norm of non-interference in domestic affairs. Key characteristics include the conception of the state as a supreme, independent political authority within defined territorial borders. Its significance lies in providing the historical and conceptual basis for understanding the organization and interaction of states in global politics since the mid-17th century.