KYIV, Ukraine — Ukraine on Tuesday accused Russian forces of blowing up a major dam and hydroelectric power station in a part of southern Ukraine that Moscow controls, sending water gushing from the breached facility and threatening what officials called an "ecological disaster" due to possible massive flooding. Officials from both sides in the war ordered hundreds of thousands of residents downriver to evacuate.
Russian officials countered that the Kakhovka dam, on the Dnipro river, was damaged by Ukrainian military strikes in the contested area.
