U.S. Secretary of State , Iranian foreign minister meet on sidelines at security conference . Comment: In November , Iran said it would stop some in exchange for lessening of sanctions . They also discussed Americans held by Iran , U.S. official says .
U.S. Secretary of State , Iranian foreign minister meet on sidelines at security conference . They talked about Iran 's agreement to halt its most sensitive nuclear operations . In November , Iran said it would stop some in exchange for lessening of sanctions . They also discussed Americans held by Iran , U.S. official says .