Збруч
In April 1920, Józef Piłsudski and Symon Petliura agreed in the Treaty of Warsaw to a border on the river Zbruch, officially recognizing Polish control over the disputed territory of Eastern Galicia. In exchange for agreeing to a border along the Zbruch River, recognizing the recent Polish territorial gains in western Ukraine, as well as the western portions of Volhynian Governorate, Kholm Governorate, and other territories (Article II), Poland recognized the Ukrainian People's Republic as an independent state (Article I) with borders as defined by Articles II and III and under otaman Petliura's leadership.