Dag Hammarskjöld ( 1905 - 18 September 1961 ) is a Swedish economist and secretary-general of the United Nations between 1953 and 1961 

He served as Swedish Deputy Foreign Minister and was elected as the second Secretary-General of the United Nations after the resignation of the first Secretary-General of the United Nations in 1953, and then renewed him in 1958. Tombe on the Congo problem and the separation of Katanga province from the Congo (formerly Zaire). Hammarskjöld was an employee of the Swedish government. He held a great job but did not reach the rank of minister. The most important thing was that he was from an aristocratic and wealthy family. His ancestors were warriors in the armies of Sweden, which had been living in constant wars with its neighbors before turning in its modern history to a neutral and peaceful state. Nobody had heard of his name outside his country, but he was a member of the committee discussing the Nobel Peace Prize nominees. He wanted to simplify his name. He said it was composed of two words: Hammer (Hammer) and Shield (Shield). Not many years later, this man had a tremendous power on the international stage comparable to that of the great powers with different roles. He became one of three or four men in the world who are his strongest leaders and leaders. At the highest level, only six men took part: the heads of the five major powers and the sixth, Hammarskjöld.