Former U.N. Secretary-General Boutros Boutros-Ghali, a veteran Egyptian diplomat who helped negotiate his country’s landmark peace deal with Israel but then clashed with the United States when he served a single term as U.N. secretary-general, died Tuesday, the U.N. Security Council announced.

Boutros-Ghali, who was 93, died in a Cairo hospital, Egyptian media reported.

The Egyptian served one five-year term as U.N. chief between 1992 and 1996. The Security Council held a one-minute moment of silence Tuesday after his death was announced by Venezuela’s U.N. Ambassador Rafael Ramirez, the current council president, Reuters reports