What does “previously unannounced” visit mean?

BAGHDAD (Reuters) - U.S. Secretary of State Condoleezza Rice flew into Baghdad on Thursday for a previously unannounced visit, Iraqi officials said.

Rice has been on a tour of the Middle East, having already visited Israel, the Palestinian Territories, Egypt and Saudi Arabia. She was likely to hold meetings with Iraqi government officials, including Prime Minister Nuri al-Maliki.

U.S. officials have been putting pressure on Maliki’s Shi’ite-led government to reign in militias blamed for much of the sectarian violence ravaging the country.

Washington has made the training of Iraqi security forces the focus of hopes to start withdrawing 140,000 U.S. troops.

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