JERUSALEM, Jan. 5 -- Mohammed Alwan applied pressure to the wounds of the young man in a corridor of Gaza City's Shifa Hospital on Monday. Blood flowing from his body turned the surgeon's gloved hands crimson. "Khalas," a voice said, Arabic for "It's over." The doctor refused to give up. He pumped the man's chest, hoping to resuscitate him. A few minutes later, the man died. "What can I say?" he s