Alyattes's eastern conquests brought the Lydian Empire in conflict in the 590s BC with the Medes, and a war broke out between the Median and Lydian Empires in 590 BC which was waged in eastern Anatolia lasted five years, until a solar eclipse occurred in 585 BC during a battle (hence called the Battle of the Eclipse) opposing the Lydian and Median armies, which both sides interpreted as an omen to end the war. The Babylonian king Nebuchadnezzar II and the king Syennesis of Cilicia acted as mediators in the ensuing peace treaty, which was sealed by the marriage of the Median king Cyaxares's son Astyages with Alyattes's daughter Aryenis, and the possible wedding of a daughter of Cyaxares with either Alyattes or with his son Croesus.
Alyattes's eastern conquests brought the Lydian Empire in conflict in the 590s BC with the Medes, and a war broke out between the Median and Lydian Empires in 590 BC which was waged in eastern Anatolia lasted five years, until a solar eclipse occurred in 585 BC during a battle (hence called the Battle of the Eclipse) opposing the Lydian and Median armies, which both sides interpreted as an omen to end the war. The Babylonian king Nebuchadnezzar II and the king Syennesis of Cilicia acted as mediators in the ensuing peace treaty, which was sealed by the marriage of the Me?dian king Cyaxares's son Astyages with Alyattes's daughter Aryenis, and the possible wedding of a daughter of Cyaxares with either Alyattes or with his son Croesus.