A Syrian civilian sobs as a relative lies on a hospital trolley after was he was wounded by a sniper shot to his back in Aleppo, Syria, on Saturday. A U.N.-backed truce declared for the Muslim holiday of Eid al-Adha has failed to take hold. (Associated Press)

A Syrian civilian sobs as a relative lies on a hospital trolley after was he was wounded by a sniper shot to his back in Aleppo, Syria, on Saturday. A U.N.-backed truce declared for the Muslim holiday of Eid al-Adha has failed to take hold. (Associated Press)