Ernst Baltrusch is a Professor of Ancient History at the Friedrich Meinecke Institute of the Freie Universität Berlin. Baltrusch’s work focuses on the history of Judaism in antiquity, ancient international law, the history of Sparta, especially regarding foreign policy, and the transition from the Roman Republic to the Principate. In Topoi, Ernst Baltrusch is involved in the area “Mechanisms of Control and Social Spaces (Area B “Historical Spaces”).