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A mourning Egyptian Christian woman weeps during Sunday mass on January 2, 2011 at the Al-Qiddissine (The Saints) church in Alexandria, which was targeted on New Year's Eve by a car bomb attack in which 21 people were killed. Egyptian newspapers warned on Sunday that "civil war" could break out unless Christians and Muslims close ranks after the deadly attack on the Coptic church in the northern Egyptian Mediterranean port that triggered angry protests. AFP PHOTO/MOHAMMED ABED / AFP PHOTO / MOHAMMED ABED