Rosika Schwimmer was a Hungarian-born pacifist, feminist, world federalist and women's suffragist. A co-founder of the Campaign for World Government with Lola Maverick Lloyd, her radical vision of world peace led to the creation of several world federalist movements and organizations. Sixty years after she first envisaged it, the movement she helped to create indeed took a leading role in the creation of the International Criminal Court, the first permanent international tribunal tasked with charging individuals with war crimes, crimes against humanity and genocide.

World federalism or global federalism is a political ideology advocating a democratic, federal world government. A world federation would have authority on issues of global reach, while the members of such a federation would retain authority over local and national issues. The overall sovereignty over the world population would largely reside in the federal government.