Ugandan diplomat Olara Otunnu has joined the contest to become the next secretary-general of the United Nations, the seventh contender to succeed Antonio Guterres when he steps down at the end of this year.
Otunnu, a former U.N. under-secretary-general who served as a special representative for children and armed conflict, was nominated by Uganda in a letter on Friday to the presidents of the U.N. General Assembly and Security Council.