The Nobel Peace Prize 2009 was given to Barack H. Obama "for his extraordinary efforts to strengthen international diplomacy and cooperation between peoples".
For those who would like to read the transcript of President Obama's acceptance speech (officially referred to as a Laureate's "lecture"), it can be found
here, with some introductory commentary above the transcript.
The official video of his lecture will be posted
here soon. The Nobel Prize page about this honor is
here.
--Diane.
(EDIT: I encourage you to read, or later watch, the above. He closes by saying:
"We can acknowledge that oppression will always be with us, and still strive for justice. We can admit the intractability of depravation, and still strive for dignity. We can understand that there will be war, and still strive for peace. We can do that – for that is the story of human progress; that is the hope of all the world; and at this moment of challenge, that must be our work here on Earth." )