War sometimes justified, Obama says in Nobel Peace Prize speech

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Oslo, Norway (CNN) — President Obama accepted the Nobel Peace Prize Thursday by talking about war and the limits of non-violence.

But he also praised the peacemakers of the past, and said the world can and should still strive for peace.

“Let us reach for the world that ought to be,” he told the 1,000-member audience at Oslo City Hall. “Clear-eyed, we can understand that there will be war, and still strive for peace.”

The Nobel committee’s choice of Obama as this year’s laureate sparked controversy, in part because he is a president waging two wars abroad. Obama said force is sometimes necessary, but said that is simply “a recognition of history, the imperfections of man, and the limits of reason.”