Ashtat Yeztayar was an Iranian military officer under what last great king of the Sasanian Empire, reigning from 590 to 628?
Khosrow II Khosrow II (Chosroes II in classical sources; Middle Persian: "Husrō(y)"), entitled "Aparvēz" ("The Victorious"), also Khusraw Parvēz (New Persian: خسرو پرویز ), was the last great king of the Sasanian Empire, reigning from 590 to 628.
Second Perso-Turkic War The Second Perso-Turkic War began in 606/607 with an invasion of Sassanid Persia by the Göktürks and Hephthalites. The war ended in 608 with the defeat of the Turks and Hephthalites by the Sasanians under the Armenian general Smbat IV Bagratuni.