In his 1918 “Fourteen Points,” President Wilson advocated open diplomacy, national self-determination, and the creation of an international organization. These ideas were debated at the 1919 Paris Peace Conference and were eventually written into the Treaty of Versailles as the covenant of the League of Nations. The League was designed as a forum that would settle disputes by dialogue instead of force and became a forerunner of today’s United Nations. Although the United States never joined because Congress rejected the treaty, the blueprint itself reshaped global thinking about peace. Wilson continued touring European capitals after the war to push for ratification. His diplomacy popularized the concept of “collective security,” creating a new framework for twentieth-century international relations. For these achievements he was selected for the 1919 Nobel Peace Prize.

Wilson’s League of Nations project was an innovative attempt to balance liberal internationalism with elements of political realism. By invoking the principle of self-determination, he encouraged the reorganization of multi-ethnic empires while Article 10 of the Covenant obliged members to safeguard each other’s territorial integrity and political independence. This design is regarded as the prototype of collective security. The League also institutionalized mechanisms such as conciliation commissions and the Permanent Court of International Justice, aiming to give international law real enforcement power. Conversely, the U.S. Senate’s refusal to ratify the treaty serves as a textbook example of how domestic politics can determine the fate of international institutions. Wilson’s vision strongly influenced the drafting of the UN Charter after World War II, particularly the collective response principle of the Security Council and the creation of the Economic and Social Council. Although the League could not prevent another global conflict, it laid bare the tension between state sovereignty and international cooperation and provided the intellectual foundation for institutionalist approaches in International Relations scholarship.

Through the Fourteen Points, Wilson sought to reconceptualize Westphalian sovereignty by embedding institutionalized dispute-resolution mechanisms. His mandate system, generated at the Paris Peace Conference, integrated colonial redistribution into a legal framework and pioneered international trusteeship governance. In the Covenant draft he codified compulsory economic sanctions (Article 16), thereby legalizing coercive measures. The unanimity rule in both the Assembly and Council aimed to empower small states, yet inadvertently reinforced decision-making rigidity. Rising partisanship and isolationism in the United States derailed ratification, and the absence of the hegemon critically weakened deterrence capacity. From an institutional-economics perspective the League functioned as an information platform for mutual monitoring, but failed to minimize enforcement costs. Overall, Wilson’s project triggered a paradigm shift in twentieth-century institutional theory and continues to supply multilayered insights to the governance literature on international organizations.