Days after Pearl Harbor, Nazi Germany declared war on America. But why did Hitler choose to draw the United States directly into the European conflict?

Theodor Dannecker helped Adolf Eichmann administer a continent-wide genocide.

When World War II ended, British and American leaders were unsure how to continue their nation’s grand alliance.

This legislation was the culmination of efforts by American citizens, activists, and politicians across the political spectrum to insulate the United States from foreign conflicts and prevent the country from being drawn into another global war. 

In 1945 the American intellectual, Norman Cousins, was one of the first to raise terrifying questions for humanity about the successful splitting of the atom.