How did Karl Jaspers distinguish a world confederation from a government with absolute sovereignty?

In his 1958 work The Future of Mankind, Karl Jaspers argued that the pursuit of political world unity should not result in a government possessing absolute sovereignty.1

Instead, he advocated for a world confederation. Jaspers distinguished this model by emphasizing that it would allow various entities to coexist and engage in communication while maintaining their freedom and peace, rather than being subsumed under a single, absolute authority. This vision was rooted in his broader commitment to a world philosophy that prioritized free communication and the preservation of human liberty in the face of modern technological and political challenges.12