What was the focus of President Obama's 2009 Nobel Peace Prize acceptance speech?

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The focus of President Obama's 2009 Nobel Peace Prize acceptance speech was the concept of a "just" war. He discussed the complexities of the use of force in international relations and the criteria that must be met in order for a war to be considered just. He also discussed his vision for a world without nuclear weapons and the role of diplomacy in achieving peace.

What Was the Focus of President Obama's 2009 Nobel Peace