The Patriarch of the Chaldean Church, Louis Raphael Sako takes part in a mass for Easter celebrations led by Cardinal Fernando Filoni (unseen), Pope Francis' special envoy to Iraq and attended by Iraqi Christians who fled the violence in the northern Iraqi city of Mosul, on April 4, 2015 in Arbil, the capital of the Kurdish autonomous region in northern Iraq. AFP PHOTO / SAFIN HAMED (Photo credit should read SAFIN HAMED/AFP/Getty Images)
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