What was missionary about Woodrow Wilson's diplomacy and how successfully did he pursue it?

Woodrow Wilson's diplomacy was characterized by his belief in promoting democracy and self-determination, which he deemed essential for global peace and stability. He envisioned America as a moral leader on the world stage, advocating for principles such as collective security and the establishment of the League of Nations. However, his pursuit of these ideals was met with mixed success; while he achieved some influence through the Treaty of Versailles, he ultimately faced significant resistance at home, leading to the U.S. Senate's rejection of the League of Nations. Thus, while Wilson's vision was ambitious, its practical implementation fell short of his aspirations.