US President Barack Obama on Friday won the Nobel Peace Prize less than a year after he took office. Obama was honoured "for his extraordinary efforts to strengthen international diplomacy and cooperation between peoples," the head of the Norwegian Nobel Committee Thorbjoern Jagland said. The committee attached "special importance to Obama's vision and work for a world without nuclear weapons" and said he had created "a new climate in international politics." "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," it said.