Obama makes unannounced visit to Iraq

Obama flew into the country hours after a car bomb exploded in a Shiite neighborhood of the capital city, a deadly reminder of the violence that has claimed the lives at least 4,266 members of the U.S. military since March 2003.

The visit came at the conclusion of a long overseas trip that included economic and NATO summits in Europe and two days in Turkey.

Shortly before leaving Turkey, the president held out Iraq as an example of the change he seeks in policies inherited from former President George W. Bush.

"Moving the ship of state takes time," he told a group of students in Istanbul. He noted his long-standing opposition to the war, yet said, "Now that we're there," the U.S. troop withdrawal has to be done "in a careful enough way that we don't see a collapse into violence."

In office only 11 weeks, Obama has already announced plans to withdraw most U.S. combat troops on a 19-month timetable. The drawdown is to begin slowly, so American forces can provide security for Iraqi elections, then accelerate in 2010. As many as 50,000 troops are expected to remain in the country at the end of the 19 months to perform counterterrorism duties.

Tuesday's trip was Obama's third to Iraq, and his first since taking office. He met with U.S. commanders and troops last summer while seeking the presidency.

Because of security concerns, the White House made no advance announcement of the visit, and released no details for his activities on the ground.

It was the last stop of an eight-day trip to Europe and Turkey during which Obama sought to place his stamp on U.S. foreign policy after eight years of the Bush administration.

He and other world leaders pledged cooperation to combat a global recession, and he appealed with limited success for additional assistance in Afghanistan, a war he has vowed to intensify. The new president drew large crowds as he offered repeated assurances that the United States would not seek to dictate to other countries.

"I am personally committed to a new chapter of American engagement. We can't afford to talk past one another, to focus only on our differences, or to let the walls of mistrust go up around us." Obama said before leaving Turkey. The visit to a nation that straddles Europe and Asia was designed to signal a new era. He had pledged as a candidate to visit a majority-Muslim nation in his first 100 days in office.