By Fredrik Dahl VIENNA (Reuters) - Senior Iranian officials indicated on Tuesday that progress was being achieved in expert-level talks between Tehran and six world powers over the implementation of a landmark nuclear deal. The goal is to work out details on implementing the November 24 interim accord under which Iran will curb its disputed nuclear program in return for some easing of sanctions that have battered its oil-dependent economy. "The discussions are very smooth," Hamid Baeedinejad, head of the Iranian delegation, said after the second day of talks. "We have made our views known to each other with regard to the implementation aspects of each and every measure.
US stocks Tuesday ended somewhat lower as investors looked ahead to a retail sales report that covers the beginning of the critical holiday shopping season. At the closing bell, the Dow Jones Industrial Average fell 51.50 (0.32 percent) to 15,974.03. The broad-based S&P 500 shed 5.75 (0.32 percent) to 1,802.62, while the tech-rich Nasdaq Composite Index declined 8.26 (0.20 percent) to 4,060.49. Tuesday's losses came on a fairly quiet day for economic news, said Michael James, managing director at Wedbush Securities.