AIRO, Egypt - The boys' deaths — scattered in the United States, in Yemen, in Turkey and elsewhere in seemingly isolated horror — had one thing in common: They hanged themselves after watching televised images of Saddam Hussein's execution. Officials and relatives say the children appeared to be mimicking the former dictator's Dec. 30 hanging, shown both on a sanitized Iraqi government tape and explicit clandestine videos that popped up on Web sites and some TV channels. The leaked videos, apparently taken by cell phone cameras, set off international outrage over the raucous scene at Saddam's execution, but some experts...