Dag Hjalmar Agne Carl Hammarskjöld ( HAM-?r-shuuld, Swedish: ['d??g ?ham?ar??œld] (listen); 29 July 1905 – 18 September 1961) was a Swedish economist and diplomat who served as the second Secretary-General of the United Nations.
Hammarskjöld is the youngest person to have held the post, at an age of 47 years upon his appointment.
His second term was cut short when he died in the crash of his DC-6 airplane (whose cause is still disputed) while en route to cease-fire negotiations during the Congo Crisis.
He is one of only four people to be awarded a posthumous Nobel Prize.Hammarskjöld has been referred to as one of the two best secretaries-general of the United Nations, and his appointment has been mentioned as the most notable success for the UN.
United States President John F.
Kennedy called Hammarskjöld "the greatest statesman of our century."