CAIRO, EGYPT - DECEMBER 12: Egyptian President Abdel Fattah el-Sisi (R) attends the funeral ceremony for the victims of the explosion at Saint Peter and Saint Paul Coptic Orthodox Church in Abbasiya district, at Church of the Virgin Mary in Nasr City neighborhood of Cairo, Egypt on December 12, 2016. (Photo by Egyptian Presidency - Handout/Anadolu Agency/Getty Images)