Right-bank Ukraine. This event would lead the Ottomans into the Russo-Turkish War (1676-1681). His next vizier, Köprülü Mehmed's adopted son Merzifonlu Kara Mustafa, led campaigns against Russia, besieging Chyhyryn in 1678 with 70,000 men. He next supported the 1683 Hungarian uprising of Imre Thököly against