A nun reacts to the scene of a bomb explosion at the Saint Peter and Saint Paul Coptic Orthodox Church on December 11, 2016, in Cairo's Abbasiya neighbourhood. (KHALED DESOUKI/AFP/Getty Images)
Iraqi Christians attend a Christmas mass at the Catholic Church of Our Lady of Deliverance/Salvation (Sayidat al-Nejat), in central Baghdad, on December 25, 2015. (AHMAD AL-RUBAYE/AFP/Getty Images)
Iraqi Christians, who fled the violence in the northern Iraqi city of Mosul, pray during a Christmas mass in Arbil, the capital of the Kurdish autonomous region in northern Iraq on December 24, 2014. (SAFIN HAMED/AFP/Getty Images)
Syrian internally displaced people walk in the Atme camp, along the Turkish border in the northwestern Syrian province of Idlib, on March 19, 2013. (BULENT KILIC/AFP/Getty Images)
World leaders and dignitaries attend the funeral of the former Israeli leader Shimon Peres at Mount Herzl Cemetery on September 30, 2016 in Jerusalem, Israel. (Amos Ben Gershom/GPO via Getty Images)
A French police officer stands guard by Saint-Etienne-du-Rouvray's city hall following a hostage-taking at a church in Saint-Etienne-du-Rouvray, northern France, on July 26, 2016 that left the priest dead. (CHARLY TRIBALLEAU/AFP/Getty Images)
Iraqi Christian children, who fled the violence in the Nineveh province, attend a mass with their mothers at a chuch in Dekwaneh, east of the Lebanese capital Beirut on March 21, 2015. (ANWAR AMRO/AFP/Getty Images)