Happy Birthday to Dag Hammarskjöld, 29 July 1905 – 18 September 1961. Hammarskjöld was the second Secretary General of the United Nations Security Council, and his influence in global governance is recognised to this day. Hammarskjöld was killed in a plane crash near Ndola, Zambia, in 1961. He posthumously received the Nobel Peace Prize in 1961.

Photo credit: UN Photo/JO