The Treaty of Küçük Kaynarca (also spelled Kuchuk Kainarji) was a peace treaty signed on 21 July 1774, in Küçük Kaynarca (today Kaynardzha, Bulgaria) between the Russian Empire and the Ottoman Empire. Following the recent Ottoman defeat at the Battle of Kozludzha, the document ended the Russo-Turkish War of 1768–1774 and marked a defeat of the Ottomans in their struggle against Russia. The Russians were represented by Field-Marshal Rumyantsev while the Ottoman side was represented by Musul Zade Mehmed Pasha. The treaty was a most humiliating blow to the once-mighty Ottoman realm.