U.S. Secretary of State , Iranian foreign minister were on sidelines at the conference . They talked about Iran 's agreement to stop its most sensitive nuclear operations . Earlier discussions : Syria . In addition , Iran said it would stop some in exchange for lessening of sanctions . They also discussed hostages held by Iran , Iranian official says .
U.S. Secretary of State , Iranian foreign minister were on sidelines at the conference . They talked about Iran 's agreement to stop its most sensitive nuclear operations . In addition , Iran said it would stop some in exchange for lessening of sanctions . They also discussed hostages held by Iran , Iranian official says .