TO GO WITH AFP STORY BY ISMET HAJDARI AND TANJA VUJISIC
TOPSHOT - People gather on the banks of the Lake Gazivode in northern Mitrovica, Kosovo, during the traditional Epiphany swimming competition on January 19, 2018. - Controlled by Serbs but a power source for Kosovo, the disputed blue-green waters of Lake Gazivode reflect the thorny relationship between the former war foes and the difficulty of any attempt to change their borders. The 24-kilometre (15-mile) reservoir snakes across the frontier dividing Serbia and Kosovo, two neighbours locked in a diplomatic dispute twenty years after they were split by war. (Photo by Armend NIMANI / AFP)