November 30, 2009 6:01 PM

As U.S. focus turns to Afghanistan, Iraq challenges remain

While President Barack Obama prepares to announce that he's sending tens of thousands more U.S. troops to Afghanistan, his problems in Iraq are far from over. The country's power struggles among Sunni and Shiite Muslim Arabs and between Arabs and Kurds are unfinished, and whether they will turn violent again remains uncertain.

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