Barack Obama defends war at Nobel ceremony
President Barack Obama has said the US must uphold moral standards when waging wars that are necessary and justified, as he accepted his Nobel Peace Prize.
In his speech in Oslo, he defended the US role in Afghanistan, arguing the use of force could bring lasting peace.
He also said his accomplishments were slight compared to previous laureates.
Mr Obama was given the prize in October for his "extraordinary efforts to strengthen international diplomacy and co-operation between peoples".
Thursday's ceremony in the Norwegian capital came days after Mr Obama announced he was sending 30,000 extra US soldiers to the war in Afghanistan.
