An aerial view of the Memorial Center in Potocari near Srebrenica, Bosnia and Herzegovina July 6, 2020. Picture taken with a drone July 6, 2020. Twenty-five years ago, the Bosnian Serb forces commanded by General Ratko Mladic attacked the eastern enclave of Srebrenica, where about 40,000 Bosnian Muslims have found shelter under the United Nations protection. REUTERS/Dado Ruvic