The Russo-Turkish Wars were a series of conflicts between the Russian Empire and the Ottoman Empire that occurred from the late 17th century to the early 20th century. These wars were primarily driven by territorial disputes and the desire for control over strategic regions in Eastern Europe and the Balkans. There were a total of twelve major wars, with significant battles such as the Battle of Kars and the Siege of Plevna. The outcomes often resulted in territorial gains for Russia, weakening the Ottoman Empire and contributing to its eventual decline.