Obama won the Noble Peace prize because he has opened up a world dialog that is working toward world peace. One reason Obama's accomplishment of making a substantial difference in the tone and amount of dialog between countries of the world is because the negative tone and stifling of dialog that the horrific Bush administration set for the entire world. As the pre-eminent power of the world the USA can set the tone for the entire world. No administration was more negative than the Bush administration both domestically and internationally. Obama has quickly changed to a positive tone. The accomplishment is enhanced by how bad his predecessor was.