NEW : Gates calls time with troops the `` high point '' of his trip . Defense Secretary Robert Gates meets with U.S. troops and commanders . The Pentagon said that more than 100 American soldiers were killed in Afghanistan on Monday as a result of enemy attacks. Gates also addressed the possible U.S. government shutdown . Gates arrived in Iraq on Wednesday night on an unannounced visit .
NEW : Gates calls time with troops the `` high point '' of his trip . Defense Secretary Robert Gates meets with U.S. troops and commanders . The Pentagon said that more than 100 American soldiers were killed in Afghanistan on Monday as a result of enemy attacks. Gates arrived in Iraq on Wednesday night on an unannounced visit .