Antonio Guterres, a former Portuguese Prime Minister, was on Monday sworn in as the ninth UN Secretary-General, succeeding Ban Ki-moon as the chief of the 71-year old world body.
President of the UN General Assembly Peter Thomson administered the Oath of Office to Guterres at a special plenary meeting of the 193-member General Assembly here.
Guterres, 67, was unanimously appointed by the General Assembly as the successor to Ban, after the 15-nation Security Council had in October decided by acclamation to send his name to the Assembly for final approval.