The United Earth Federation is the ruling power in post-Isolation Sol.

The destruction of the Delta Serpentis jump node led to the collapse of the military-industrial complex in Sol, the catastrophic failure of the system's economy, and the eventual dissolution of GTA authority. The three major population centers in Sol, Jupiter, Earth, and Mars, all withdrew from the Titan Accords as the systematic failure of Sol's political, military, and economic institutions progressed.

During the deepest years of the depression, groups of philosophers, scholars and scientists, mostly graduates of GTI's Human Future Project, began collaborating to restore order in the most troubled areas of Earth. Their program used sophisticated social modeling combined with neocapitalist free-market principles. Additionally, it was influenced by a philosophical school called Ubuntu, concerned with the understanding of human relationships.
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Ultimately this movement became known as the Ubuntu Party. Its widespread success on Earth carried it to global political prominence. Ultimately, its influence spread to Mars and Jupiter as well. In spite of numerous setbacks, Ubuntu's program of education, scientific exploration and industrial growth - powered by ever-more-refined simulations - restored prosperity to Sol and ushered in an age of peace, prosperity, and philosophical development.

The Federation is a loose coalition of three states, each one ruled by the Ubuntu Party: Earth, the Martian Concordia, and the Jovian Systems Republic. Each state maintains a Fleet. Earth's First Fleet is led by Admiral Byrne, and serves primarily as a strategic deterrent and peacekeeping force. Mars' Second Fleet, under Admiral Kyle Netreba, guards the critical infrastructure of Martian space and is known for its fierce, undisciplined pilot corps. The Jovian Rim Fleet, or Third Fleet, under Admiral H. M. Calder, is the most powerful, disciplined and formidable fighting force in Sol. It frequently clashes with Kuiper Belt irregulars, particularly those of the terrorist Gaian Effort.

GTVA psychohistorians and analysts consider the pacifist Ubuntu Party to be a peculiarity, a form of government possible only in the safe pocket of post-Isolation Sol. Now that Sol is once more open to star travel, the GTVA's analysts have predicted the virulent spread of the Federation's pacifist/spiritualist Ubuntu ideology, critically compromising mankind's ability to defend itself.

As a result, the GTVA elected to declare war on the Federation and move to isolate and reduce the influence of its Ubuntu leaders, with the ultimate goal of guaranteeing mankind's ability to meet future Shivan threats.