Queen Noor of Jordan signs condolence book at Potocari memorial center prior to burial ceremony in Potocari Memorial Cemetery, on July 11, 2015. Bosnian Muslims marked 20th anniversary of the 1995 Srebrenica massacre by burying 136 newly identified victims of the massacre. AFP PHOTO / ELVIS BARUKCIC        (Photo credit should read ELVIS BARUKCIC/AFP via Getty Images)