A dam in the Russian-occupied part of Ukraine’s Kherson region has collapsed, causing extensive flooding in the town of Oleshky. The situation has prompted mass evacuations and led to accusations from Ukraine of Moscow committing an act of “ecocide.” The critical Nova Kakhovka dam supplies water to southeastern Ukraine and the Crimean peninsula, as well as the Zaporizhzhia nuclear plant. While no immediate nuclear safety risk has been reported, the dam’s collapse will likely affect the plant’s operations.