Peace of Amasya

The treaty defined the border between Iran and the Ottoman Empire and was followed by twenty years of peace.

[1] The Ottoman Empire obtained most of Iraq, including Baghdad, which gave them access to the Persian Gulf, while the Persians retained their former capital Tabriz and all their other northwestern territories in the Caucasus and as they were prior to the wars, such as Dagestan and all of what is now Azerbaijan.

Several buffer zones were established as well throughout Eastern Anatolia, such as in Erzurum, Shahrizor, and Van.

[9] Another term of the treaty was that the Safavids were required to end the ritual cursing of the first three Rashidun Caliphs,[10] Aisha and other Sahaba (companions of Muhammad) — all held in high esteem by Sunnis.

This condition was a common demand of Ottoman-Safavid treaties,[11] and in this case was considered humiliating for Tahmasp.