Washington: US President George W. Bush's surprise visit to troops in Iraq on Thursday was a public relations coup, but is unlikely to boost sagging domestic support for US involvement in Iraq, analysts said. Bush won a standing ovation from some 600 delighted American soldiers he surprised at a Thanksgiving dinner at Baghdad airport. "It's public relations for the American public. It's a symbolic action," said Stephen Zunes, a professor of political science and a Middle East specialist at the University of San Francisco. "I think there is some need to give some kind of gesture that shows that he...