Dismissing completely 17th to 19th century ideas of a Canaanite, Assyrian, Indian or Macedonian origin, Historian Alexander K. Nefiodkin challenges Xenophon's attribution of scythed chariots to the first Persian king Cyrus, pointing to their notable absence in the invasion of Greece (480−479 BC) by one of his successors, Xerxes I. Instead, he argues that the Persians introduced scythed chariots sometime later during the Greco-Persian Wars, between 467 BC and 458 BC, as a response to their experience fighting against Greek heavy infantry.