ENVOY HELPED END THE IRAN-IRAQ WAR, WON RELEASE OF HOSTAGES; In 1986, he became the chief United Nations official in charge of negotiating a truce in the conflict between Sunni-majority Iraq and Shiite-majority Iran in which more than one million people were killed

Byline: MICHAEL WEISSENSTEIN; ASSOCIATED PRESS Former UN diplomat Giandomenico Picco, whose negotiating skills helped resolve some of the thorniest crises of the 1980s and 1990s, including the Iran-Iraq war and [...]