Dag Hammarskjöld (1905-1961) was a Swedish diplomat, economist, and author. An early Secretary-General of the United Nations, he served from April 1953 until his death in a plane crash in September 1961. He is the only person to have been awarded a posthumous Nobel Peace Prize. Hammarskjöld remains the only U.N. Secretary-General to die in office, and his death occurred en route to cease-fire negotiations. Praised by many, President of the United States John F. Kennedy called Hammarskjöld “the greatest statesman of our century".
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