Which United Nations Secretary General was the oldest when he retired?
Boutros Boutros-Ghali
Kofi Annan
Kofi Annan
Dag Hammarskjöld
Kofi Annan
Dag Hammarskjöld
António Guterres
Kofi Annan
Ban Ki-moon
Dag Hammarskjöld
António Guterres
Ban Ki-Moon
U Thant
Kofi Annan
Kurt Waldheim
Ban Ki-moon
Dag Hammarskjöld
Javier Pérez de Cuellar
U Thant
António Guterres
Ban Ki-Moon
Dag Hammarskjold
Kofi Annan
Kurt Waldheim
Ban Ki-moon
Javier Pérez de Cuellar
Dag Hammarskjöld
Javier Perez de Cuéllar
U Thant
Boutros Boutros Ghali
Ban Ki Moon
Dag Hammarskjold
Ban Ki-Moon
Boutros-Ghali
António Guterres
Kurt Waldheim
Kofi Annan
U Thant
Ban Ki-moon
Javier Pérez de Cuellar
Yasser Arafat
Ban Ki Moon
Dag Hammarskjöld
Boutros Boutros Ghali
Yasuo Kuniyoshi
Yukio Hatoyama
Kofi Annan, Jr.
António Guterres.
Yasuo Fukuda
Dag Hammarskjold
Ban Ki-Moon
Boutros-Ghali
U Thant
António Guterres
Javier Perez de Cuellar
Ban Ki Moon
Ban Ki-moon
John Kofi Annan
Kurt Waldheim
Javier Pérez de Cuellar
Yasuhiro Nakasone
Yasser Arafat
Kofi Annan
Dag Hammarskjöld
Boutros Boutros Ghali
Yasuo Kuniyoshi
Yukio Hatoyama
António Guterres.
Dag Hammarskjold
Yasuo Fukuda
Kofi Annan, Jr.
U Thant
Yasuhiro Nakamura
Ban Ki Moon
Ban Ki-Moon
Boutros-Ghali
John Kofi Annan
Ban Ki-moon
Javier Pérez de Cuellar
António Guterres
Theodore Roosevelt
Kurt Waldheim
Yasser Arafat
Kofi Annan
Yunus ElBaradei
Dag Hammarskjöld
U Thant
Yasuhiro Nakasone
Boutros Boutros Ghali
Dag Hammarskjold
Ban Ki Moon
Antonio Guterres
Yasuo Fukuda
Yves Leterme
Kofi Annan, Jr.
Kofi Annan.
António Guterres.
Ban Ki-Moon
Boutros-Ghali
Ban Ki-moon
Theodore Roosevelt
Yasuhiro Nakamura
Javier Pérez de Cuellar
Kurt Waldheim
U Thant
Yasser Arafat
Yukiya Amano
Ban Ki Moon
Dag Hammarskjöld
Yukio Hatoyama
Yasuji Nakasone
Dag Hammarskjold
António Guterres
Boutros Boutros Ghali
Yunus ElBaradei
Kofi Annan
John Kofi Annan
Yasuo Fukuda
Yasuhiro Nakagawa
Yasujiro Ono
Javier Pérez de Cuevas
Theodore Roosevelt
Yukio Mishima
Antonio Guterres
Ban Ki-moon
Ban Ki-Moon
Javier Pérez de Cuellar
Kofi Annan.
U Thant
António Guterres.
Ban Ki Moon
Yasuo Kunda
Muhammad Yunus
Kurt Waldheim
Yukiya Amano
Dag Hammarskjöld
Dag Hammarskjold
Kurt Waldheim, Jr.
John Kofi Annan
Yasuo Kunimoto
Yasser Arafat
Boutros-Ghali
Boutros Boutros Ghali
Yunus ElBaradei
Kofi Annan
Yasuhiro Nakayama
Theodore Roosevelt
Ban Ki-moon
Kofi Annan, Jr.
U Thant
Javier Pérez de Cuellar
Ban Ki Moon
Antonio Guterres
Theodore Roosevelt, Jr.
Yves Leterme
Yasuo Fukuda
Ban Ki-Moon
António Guterres.
Yasuhiro Nakamoto
Kofi Annan.
Kurt Waldheim
Dag Hammarskjold
Dag Hammarskjöld
Theodore Roosevelt
Yasuo Kunimoto
Boutros-Ghali
U Thant
Boutros Boutros Ghali
Ban Ki-moon
Ban Ki Moon
Yves Klein
Kofi Annan, Jr.
Kofi Annan
Javier Pérez de Cuellar
Yves Leterme
Javier Pérez Jiménez
Yunus El-Sayed
Theodore Roosevelt, Jr.
Ban Ki-Moon
Yukiya Aoyama
Yunus ElBaradei
Yunus El-Hayat
Antonio Guterres
Jacques Chirac
Yunus al-Khatib
Dag Hammarskjold
Al Gore
Yunus El-Sherbini
Theodore Roosevelt
Kurt Waldheim
U Thant
Yukio Mishima
Yasuo Kunimoto
Yunus al-Atassi
Ban Ki Moon
Yasuo Kunda
António Guterres.
Yukio Hatoyama
Boutros-Ghali
John Kofi Annan, Jr.
Boutros Boutros Ghali