U.S.-Iran military strikes pushed oil prices higher, sending Wall Street's main indexes lower at Monday's open and heightening inflation concerns as investors assessed a more hawkish interest-rate outlook. The Dow Jones Industrial Average fell 97.4 points, or 0.18%, to 53,462.6. The S&P 500 dropped 14.2 points, or 0.18%, to 7,697.52, while the Nasdaq Composite declined 43.9 points, or 0.17%, to 26,358.559.