By VASILISA STEPANENKO and SUSIE BLANN (Associated Press) KHERSON, Ukraine (AP) — A major dam in southern Ukraine collapsed Tuesday, flooding villages, endangering crops and threatening drinking water supplies as both sides in the war scrambled to evacuate residents and blamed each other for the destruction. Ukraine accused Russian forces of blowing up the Kakhovka dam and hydroelectric power station, which sits on the Dnieper River in an area that Moscow has controlled for more than a year.