TIBERIUS III: The Admiral Emperor Executed by His Predecessor

An Emperor Forged by the Sea. Destroyed by Betrayal.

Between 698 and 705 CE, naval commander Apsimar seized the Byzantine throne as Tiberius III. Facing execution after a failed expedition to reclaim Carthage, he chose rebellion—overthrowing Emperor Leontius and claiming an empire hemorrhaging territory to Arab conquest.

For six years, Tiberius III governed with unexpected competence. He strengthened Byzantine naval supremacy, maintained defensive lines against Arab incursions, and preserved administrative continuity as the empire contracted to a fraction of its former glory.

Yet competence proved no defense against vengeance.

In distant Cherson, the mutilated exile Justinian II—overthrown and disfigured in 695—plotted his return. Through Khazar alliance and Bulgar mercenaries, the noseless emperor accomplished the impossible: he reclaimed his throne.

When Justinian's forces reached Constantinople in 705, the gates opened from within. Tiberius, betrayed by his own officers, was seized alongside Leontius. What followed in the Hippodrome before one hundred thousand witnesses remains one of Byzantine history's most savage acts of imperial vengeance.

The admiral became emperor. The walls were betrayed. The Hippodrome ran with blood.