Obama said there was no fuller expression of U.S. support for self-determination than its withdrawal from Iraq . U.S. committed to assisting Iraq , he says . A quiet ceremony ends a costly war that divided America . In Baghdad , Defense Secretary Leon Panetta pays tribute to U.S. soldiers . More than 4,500 American soldiers have died in Iraq since 2003 .
U.S. committed to assisting Iraq , he says . A quiet ceremony ends a costly war that divided America . In Baghdad , Defense Secretary Leon Panetta pays tribute to U.S. soldiers . More than 4,500 American soldiers have died in Iraq since 2003 .