The quiet diplomat who mediated a superpower nuclear standoff
“Neither would wish to be remembered by history, if any history survived, as having jointly precipitated the end of human civilization.”
U Thant was a Burmese teacher, civil servant and diplomat who became the third UN Secretary-General during the Cold War, when decolonization and international negotiation were reshaping the organization. During the Cuban Missile Crisis in 1962, he appealed to John F. Kennedy and Nikita Khrushchev, proposed a face-saving link between turning back Soviet ships and removing missiles from Cuba, then travelled to Cuba to discuss verification with Fidel Castro. His mediation lowered the danger of nuclear war, yet the UN's quiet diplomacy was long overshadowed by superpower-centered accounts of the crisis. He also directed peacekeeping in the Congo and pursued negotiations to end the Vietnam War, exposing the tension between an international institution's moral obligations and great-power politics.
Activities and affiliations
Career Timeline
- 1928–1931Teacher and headmaster, National High School, Pantanaw
- 1948Director of Broadcasting, Burma
- 1951–1957Secretary to the Prime Minister of Burma
- 1955Secretary of the Bandung Conference
- 1957–1961Burma's Permanent Representative to the UN
- 1961Chairman of the UN Congo Commission
- 1961–1971Secretary-General of the United Nations
- 1971–1974Senior fellow, Adlai Stevenson Institute of International Affairs
Related historical events
The Congo crisis and UN peacekeeping
U Thant assumed the UN Secretary-Generalship after Dag Hammarskjöld died in a plane crash in 1961. The General Assembly unanimously appointed him in 1962 and reappointed him in 1966; his term ended in late 1971. The UN Operation in the Congo (ONUC) was a major peacekeeping concern during his tenure. The UN Archives’ U Thant fonds preserves separate series of Congo-related peacekeeping subject files and correspondence with member states, minutes of the UN Advisory Committee on the Congo, and operational records dating from 1961 to 1965. These holdings reflect the archival description of the Secretary-General’s role as including coordination of the UN’s political and military bodies, rather than merely ceremonial duties. The catalogue alone, however, cannot establish U Thant’s specific instructions or determine the operation’s outcomes and accountability. It documents his institutional position overseeing the UN peacekeeping system during the crisis, as well as the extensive record of consultations among member states and field operations.