This comprehensive historical study by Saber Abdel Moneim El-Beltagy delves into the intricate dynamics of the Sasanian Persian Empire (226-651 AD). It meticulously examines the political, social, and cultural interactions between the Sasanian emperors and their neighboring civilizations, specifically the Arabs, Romans, and Turks. Drawing extensively from both rich Arabic historical sources and valuable Persian evidence, the book offers a nuanced perspective on this pivotal era. El-Beltagy provides deep insights into the alliances, conflicts, and exchanges that shaped the region, making this an essential resource for understanding the complex geopolitical landscape of late antiquity and the early Islamic period.