The only U.S. president with a Ph.D. led the country during which war?

Woodrow Wilson is the only president with a Ph.D. and the only political scientist to have served as president. Wilson studied law at the University of Virginia and earned his Ph.D. in political science and history at Johns Hopkins University. A member of the Democratic Party, Wilson served as the president of Princeton University and as the governor of New Jersey before becoming the 28th president of the United States. After a policy of neutrality at the outbreak of war in Europe, Wilson led America through World War I to “make the world safe for democracy.”

World War I
Korean War
World War II
Vietnam War