*U.S. stock indexes declined Thursday amid new tariff threats. President Trump announced possible duties on timber, automobiles, semiconductors and pharmaceuticals. * *Additional pressure on quotations was exerted by a weak outlook for Walmart, the world's largest retailer. All three major indices went into negative territory. into negative territory. Contracts on the broad market index **S&P 500 **overcame the lower boundary of the range and found support in the zone of the mark. and found support at 6100. In case of the beginning of the range of 6100-6120 can act as a local support zone. support zone. *Macroeconomic data and corporate reports remain in focus. reports.