why did Obama get the Nobel Peace Prize?

So Obama won the Nobel Peace prize, my first thought was why, and luckily some news source asked that same question:



But still why?
Why give the peace prize to Obama, the world we live in at the moment is pretty messed up and Obama had the possibility of a Polish Missile Crisis open for over six months after continued Russian threats, not only that but funneling more troops into Afghanistan thus continuing Bush's first war and then saying "you gotta look at the history."



That is something that someone as ignorant as Bush would have said, but Obama has put himself forward as being a man who knows what he is talking about and at peace with himself, not an on edge psychopathic mass murderer who is sending tens of thousands of Americans to a desert country that has already buried several other conquering armies, sure he is trying to eradicate nuclear weapons but its not as if Russian president Dmitry Medvedev doesn't want that to be a reality.