Marines searching for holdout guerrillas in Fallujah yesterday discovered the mutilated body of a blond woman lying in the street under a blood-soaked cloth — and officials believe it could be one of two Western women kidnapped last month. The body could not be immediately identified, but Margaret Hassan, 59, a Briton who runs Iraq's division of CARE International, and Polish-born Teresa Borcz Khalifa, 54, are the only kidnapped women who remain unaccounted for. As U.S. and Iraqi troops pushed deeper into devastated Fallujah, other kidnappers who last week snatched relatives of the prime minister announced that they had...