Astyages' army betrayed him and Cyrus established himself as ruler of all the Iranic peoples, as well as the pre-Iranian Elamites and Gutians, ending the Median Empire and establishing the Achaemenid Empire. Ten years after his victory against the Medes, Cyrus invaded Babylon.
Cyrus took control of all Iranic peoples, including Astyages' betrayal and the pre-Iranian Elamites and Gutians, ending the Median Empire and founding the Achaemenid Empire. Ten years following his victory over the Medes, Cyrus invaded Babylon.