After, Saffavies taken back Revan and continued their action in the Ottoman territories, Sultan Murad IV decided to organise a campaign to Baghdad. On the 198^th day of his departure from Istanbul, he arrived Baghdad in November 16, 1638. He blockaded the castle of Baghdad for thirty days and battled courageously. He castle surrendered in the end.

The treaty of Kasr-i Sirin was signed, Azerbaycan and  Revan were left to the Saffavies, the Ottomans took Baghdad and the Zagros Mountains were accepted as the border line between two countries.