U.S. Marines said American forces had taken control Wednesday of 70 percent of Fallujah in the third day of a major offensive to retake the insurgent stronghold. Maj. Francis Piccoli, of the 1st Marine Expeditionary Force, said enemy fighters were bottled up in a strip of the city flanking the major east-west highway that splits Fallujah. Army and Marine units had pushed south through the highway overnight, taking control of more than two-thirds of the rebel bastion, Piccoli said. "There's going to be a movement today in those areas. The heart of the city is what's in focus now," he said.