 Murad IV's reign is most notable for the Ottoman–Safavid War (1623–39) against Persia (today Iran) in which Ottoman forces managed to conquer Azerbaijan, occupying Tabriz, Hamadan, and capturing Baghdad in 1638.The Treaty of Zuhab that followed the war generally reconfirmed the borders as agreed by the Peace of Amasya, with Eastern Armenia, Eastern Georgia, Azerbaijan, and Dagestan staying Persian, while Western Armenia, and Western Georgia stayed Ottoman.Mesopotamia was irrevocably lost for the Persians.