He was a Swedish diplomat and author and was the second Secretary-General of the United Nations.Rumors persist alleging that victims were shot prior to the crash or that a bomb was onboard. He served from April 1953 until his death in a plane crash in September 1961. He is the only person to have been awarded the Nobel Peace Prize posthumously.He remains the only U.N. Secretary-General to die in office. U.S. President John F. Kennedy called him “the greatest statesman of our century". Name him.