 However, the Chronicle has also been described as "a piece of propaganda at Cyrus's service".Its annalistic nature suggests that original documents from the reign of Nabonidus were the starting point of its texts, but these have been heavily edited to shed unfavorable light on Nabonidus as one who repeatedly neglected the new year festival in Babylon.In regard to the historicity Cyaxares II, the Chronicle agrees with Herodotus that the army of Ishtumegu of Agamantu (considered to be Astyages of Ectabana) revolted against him, whereupon "Cyrus, king of Anshan" conquered and pillaged Agamantu/Ectabana.