Secretary General Ban Ki-moon (right), is seen here with Secretary-General-designate António Guterres, just before the General Assembly meeting to appoint him by acclamation the next Secretary-General of the United Nations. UN Photo/Evan Schneider

Secretary General Ban Ki-moon (right), is seen here with Secretary-General-designate António Guterres, just before the General Assembly meeting to appoint him by acclamation the next Secretary-General of the United Nations. UN Photo/Evan Schneider