Khosrow II (spelled Chosroes II in classical sources; Middle Persian: 𐭧𐭥𐭮𐭫𐭥𐭣𐭩, romanized: Xusrōγ/Xusrōw and Khosrau), commonly known as Khosrow Parviz (New Persian خسرو پرویز, "Khosrow the Victorious"), is considered to be the last great monarch of pre-Islamic Iran, ruling the Sasanian Empire from 590 to 628, including an interruption of one year.
Khosrow II was the son of Hormizd IV (reigned 579–590), and the grandson of Khosrow I (reigned 531–579). He was the last emperor of Iran to have a lengthy reign before the Muslim conquest of Iran, which began five years after his execution. He lost his throne, then regained it with the help of the Eastern Roman emperor Maurice, and, a decade later, went on to emulate the feats of the Achaemenids, conquering the rich Roman provinces of the Middle East; much of his reign was spent in wars with the Eastern Roman Empire and struggling against usurpers such as Bahram Chobin and Vistahm.
Khosrow II began a war against the Eastern Roman Empire in 602, allegedly to avenge the murder of his ally, Maurice. Persian forces captured much of the Roman territory, earning Khosrow II the epithet "the Victorious".
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