Completed the following sentence: In 1991 he was again a member of an Israeli peace negotiating team, travelling as part of the Israeli delegation to the UN, and in 1991 he was again a member of an Israeli peace negotiating team, travelling as part of the Israeli delegation to the UN, and in 1991 he was again a member of an Israeli peace negotiating team.
Madrid Peace Conference that opened the negotiations (for which he served as chairman of the Israeli delegation) that would eventually lead to the 1993 Oslo Accords, a major breakthrough in the Israeli-Palestinian conflict.