 Complete the following phrase:  By November 1604, the Turks led by Si Pasha reached Kars, which the Iranians had evacuated. Though Si Pasha wanted to continue towards Shirvan, his officers forced him to move south across the Aras. He established his winter encampment at Van, awaiting reinforcements. Safavid spies informed Abbas of Si Pashas decision; he immediately ordered general Allahverdi Khan to attack the town of Van before the reinforcements could arrive. Upon reaching Van, Allahverdi Khan defeated a Kurdish force outside its citadel, a sortie of Ottoman troops inside, and routed some Ottoman troops who attempted to link up with Si Pasha. Si Pasha subsequently withdrew to Northern Mesopotamia. Allahverdi Khan returned to Abbas I with the severed heads of defeated Ottomans. These were paraded at the battlefield of Chaldiran in a symbolic visit by Abbas. This was the very site where the first Safavid ruler, Ismail I 15011524, Abbass great-grandfather, suffered a defeat 