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I looked at a few winners of the Nobel Peace Prize for the past 10 years and apart from Jimmy Carter, Obama has nothing in this profile that would indicate a dedication to peace for many years unlike those people and organizations on the list who for many years worked, created, founded and established groups and organizations to help other people. As you stated he just has not had enought time as President to have accomplished or even prove he is working on anything that could bring about peace in any way to any part of the planet. Even before becoming the President Obama does not have anything on record (as per the link above) that would even indicate an effort for any kind of peace. The mere fact that this country is more divided now that it was before he was elected proves any effort so far to bring some kind of peace to the Nation alone has failed.
I just don't get it. There are people out there with far more effort when it comes to peace. Hell, even President Clinton has done more in these past few months than Obama has.