Annan quits as international Syria mediator - U.N
"Mr. Annan has informed me, and the Secretary-General of the League of Arab States, Mr. Nabil Elaraby, of his intention not to renew his mandate when it expires on 31 August 2012," Ban said in a statement, adding that he and Elaraby were in discussions on appointing a successor to Annan.
"Kofi Annan deserves our profound admiration for the selfless way in which he has put his formidable skills and prestige to this most difficult and potentially thankless of assignments," Ban said.
(Reporting by Louis Charbonneau in New York and Tom Miles in Geneva; Editing by Sandra Maler)