By: Mir M.Hosseini
In Nader's absence, Shah Tahmasp 2 decided to gain his part of the glory and attempted an unsuccessful attack on Erivan in March 1731. Without success, on his way back, he was intercepted by an Ottoman army who inflicted heavy loss on the Iranian army on Sep, 15th. Commanded by Ali Pasha, the Ottomans captured all his artillery and supplies. The Shah retreated to Isfahan while the Ottomans retook Hamedan on Sep, 18, Urmia on Nov, 15 and Tabriz on Dec, 4th.
Then the Ottomans entered negotiations with the Shah by which Erivan, Ganjeh, Tbilisi, Nakhjevan, Daghestan, and Shirvan were to remain under the Ottoman control. The river Aras was to become the boundary between the two states in north and the Ottomans were to give back the cities of Tabriz, Urmia, and Hamedan.
Iranians were unhappy with the agreement because large Iranian territories had been left in Ottoman hands. Nader cut his mission in Herat and returned to Isfahan and dethroned Tahmasp in favor of his infant son. The deposed Shah was then sent to Khorasan on July, 7, 1732.