OSLO, Norway - President Barack Obama won the 2009 Nobel Peace Prize on Friday for "his extraordinary efforts to strengthen international diplomacy and cooperation between peoples," the Norwegian Nobel Committee said, citing his outreach to the Muslim world and attempts to curb nuclear proliferation. The stunning choice makes Obama the third sitting U.S. president to win the Nobel Peace.

The Nobel committee praised Obama's creation of "a new climate in international politics" and said he had returned multilateral diplomacy and institutions like the U.N. to the center of the world stage. The plaudit appeared to be a slap at President George W. Bush from a committee that harshly criticized Obama's predecessor for resorting to largely unilateral military action in the wake of the Sept. 11 terror attacks.

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