BAGHDAD - US Defense Secretary Chuck Hagel arrived in Baghdad on an unannounced visit Tuesday, as the United States expands its presence and touts momentum against Islamic State militants four months after starting a campaign of air strikes in Iraq.
"This is a long term effort. It's difficult. There will be setbacks. There will be victories. So I think that's where we are and I look forward to getting some first-hand assessments," he told reporters Monday before his visit.