Dag Hammarskjöld
Secretary-General of the United Nations
"The pursuit of peace and progress cannot end in a few years in either victory or defeat."
Biography
The Swedish diplomat and second UN Secretary-General, Dag Hammarskjöld made the Congo the great test of his belief in an active, independent United Nations. He committed the world body to its largest peacekeeping operation yet — ONUC — to restore order, secure Belgian withdrawal, and, most fatefully, end the Katangese secession, walking a razor's edge between the Cold War superpowers. The mission drew the UN into open war in Katanga, and in September 1961, flying to Ndola to negotiate a ceasefire with Tshombe, Hammarskjöld died when his plane crashed at night in circumstances never fully explained — many believe he was shot down or sabotaged. The only Secretary-General to die in office, he was awarded a posthumous Nobel Peace Prize, and his death remains one of the Cold War's enduring mysteries, still under investigation decades later.
Did you know?
He is the only person ever awarded the Nobel Peace Prize posthumously, and John F. Kennedy called him 'the greatest statesman of our century.'
Key Battles
Operation Morthor and the Death of Hammarskjöld
Katanga, Secessionists & Rebels victorySeptember 13–18, 1961 · 200 total casualties
The death of Hammarskjöld — the only Secretary-General to die in office, awarded a posthumous Nobel Peace Prize — was a shattering blow to the UN and to the peacekeeping mission, and remains one of the great unsolved mysteries of the Cold War.
Life Journey
Timeline
July 29, 1905
🌅 Birth
Born in Jönköping, Sweden
1953
📍 Posting
Becomes UN Secretary-General
September 18, 1961
✝️ Death
Killed in an air crash near Ndola