"What he's concerned about is the Iraqi military being able to defend the country's borders against an invasion," he said. "They live in a rough neighborhood."
Iraqi sees 'void' if U.S. troops withdraw in '11 →
"At this point, the withdrawal is going well, because they are still here," he added. "But the problem will start after 2011 … the politicians must find other ways to fill the void after 2011."