By Wojciech Moskwa and Matt Spetalnick
OSLO/WASHINGTON (Reuters) - U.S. President Barack Obama won the Nobel Peace Prize on Friday for offering the world hope and striving for nuclear disarmament in a surprise award that drew both warm praise and sharp criticism.
The bestowal of one of the world's top accolades on a president less than nine months in office, who has yet to score a major foreign policy success, was greeted with gasps of astonishment from journalists at the announcement in Oslo.
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