
Murdered his father Khosrow II and 17 brothers.
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Kavad II, then known as Sheroe, led a coup against his father Khosrow II, imprisoning and later executing him. This act ended Khosrow's long reign and the Sasanian-Byzantine war, but plunged the empire into civil war and decline.
Kavad II ordered the execution of 17 of his brothers to eliminate potential rivals to the throne. This massacre decimated the Sasanian royal family and weakened the dynasty's legitimacy, contributing to the empire's instability.
Kavad II negotiated a peace treaty with the Byzantine Empire, ending the decades-long war. The treaty restored pre-war borders and returned the True Cross to Jerusalem, but the Sasanian Empire was left exhausted and weakened.
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