Dnipro River: History, Conflict & Geopolitical Battle Explained! The Dnipro River, originating in Russia’s Valdai Hills, flows through Belarus and Ukraine into the Black Sea. As Europe’s fourth longest river (1,368 miles), it has over 32,000 tributaries and serves as a key economic link via the Dnieper Canal. Historically a natural divide shaping Ukraine’s identity, it is now a war zone, with Russia’s attacks on Kherson underscoring its strategic importance. Will history repeat itself? #nextias