US stock futures fell on Tuesday, with Dow Jones Industrial Average futures sliding 0.2%, S&P 500 futures declining 0.5%, and Nasdaq-100 contracts retreating 0.9%. This downturn is attributed to rising tensions between the US and Iran, which have revived inflation concerns and pushed oil prices higher. Brent crude futures, the international benchmark, hit $91 per barrel, while US benchmark West Texas Intermediate crude futures rose to $84 per barrel. The US 10-year Treasury yield hit 4.72%, and the 30-year yield advanced to 5.31%, a 19-year high.