BAGHDAD—Prime Minister Nouri al-Maliki ruled out the presence of any U.S. troops in Iraq after the end of 2011, saying his new government and the country's security forces were capable of confronting any remaining threats to Iraq's security, sovereignty and unity.

Mr. Maliki spoke with The Wall Street Journal in a two-hour interview, his first since Iraq ended nine months of stalemate and seated a new government after an inconclusive election, allowing Mr. Maliki to begin a second term as premier.

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