GLOBAL MARKETS-Dow, S&P 500 hit record highs on greater risk tolerance

The U.S. S&P 500 and Dow Jones industrial average stock indexes set record intraday highs on Tuesday after reduced global political tensions and upbeat corporate results from Alcoa (NYSE: AA - news) boosted risk appetite, while European shares also rallied. The benchmark S&P 500 hit 2,151.96, topping Monday's intraday record high by about 8 points, while the Dow rose to 18,353.76 to top its previous record intraday high touched in May 2015. The tech-heavy Nasdaq Composite also gained, wi