US President Barack Obama has said he was “surprised and deeply humbled” to be awarded the Nobel Peace Prize, less than 10 months into his presidency.
Speaking at the White House hours after the Norwegian Nobel Prize Committee named him as a surprise winner, he said the award should be a “call to action”.
The world faced challenges that “cannot be met by one person or by one nation alone,” Mr Obama said.
The committee said he won for efforts to boost diplomacy and co-operation.
