Which U.S. President, despite facing significant political opposition, is often credited with laying the groundwork for a major 20th-century global organization, and was known for his intellectual approach to governance and foreign policy?

1. He served as president during World War I.
2. His post-presidency efforts were largely dedicated to promoting international cooperation.
3. He was a key figure at the Paris Peace Conference.
4. He suffered a major stroke while still in office, impacting his ability to govern.