President Barack Obama on Friday won the 2009 Nobel Peace Prize for "his extraordinary efforts to strengthen international diplomacy and cooperation between people," the Norwegian Nobel Committee said.

"Only very rarely has a person to the same extent as Obama captured the world's attention and given its people hope for a better future," the committee said. "His diplomacy is founded in the concept that those who are to lead the world must do so on the basis of values and attitudes that are shared by the majority of the world's population."

Obama's name had been mentioned in speculation before the award but many Nobel watchers believed it was too early to award the president.

The committee said it attached special importance to Obama's vision of and work for a world without nuclear weapons.

"Obama has as president created a new climate in international politics. Multilateral diplomacy has regained a central position, with emphasis on the role that the United Nations and other international institutions can play."