Description
The monarchs of Iran ruled for over two and a half millennia, beginning as early as the 7th century BC and enduring until the 20th century AD. The earliest Iranian king is generally considered to have been either Deioces of the Median dynasty or Cyrus the Great of the Achaemenid dynasty. The last Iranian king was Mohammad Reza Pahlavi of the Pahlavi dynasty (1925–1979), which was overthrown by the Islamic Revolution. Since then, Iran has been governed as an Islamic republic.