Persian and Greek sources call the Central Asian horse peoples Saka: pointed-hat Saka, Saka beyond the sea. Darius's inscriptions list them; the Issyk Golden Man, Kazakhstan's warrior burial, is their poster tomb. They are Scythians by culture, Saka by imperial filing.
Herodotus's best story: the Massagetae queen Tomyris defeats and kills Cyrus (530 BCE), then plunges his severed head into a skin filled with blood. Ctesias tells a different death; Xenophon lets him die in bed. The wineskin won the memory.
The pattern Tomyris condenses: the steppe consumed conquerors, Cyrus, and later generations of Persian, Macedonian, and Chinese expeditions. The Saka card reads as a standing memo: projection of power onto grassland has a body count, and the grass keeps it.
Did the founder of the Persian empire die by a steppe queen's hand, or by a historian's?