Wall Street Set to Open Lower as US-Iran Tensions Escalate

U.S. equity futures pointed to a negative open on Tuesday, September 23, 2026, as escalating rhetoric between Washington and Tehran weighed on investor sentiment. U.S. officials met with Iran's top diplomats during the UN session, while President Trump said he could "annihilate" Iran if the conflict remained unresolved. Iran warned the U.S. against fresh attacks in response. The exchange followed several sessions of record highs on Wall Street, leaving markets vulnerable to a pullback. Investors are monitoring whether the standoff escalates further, with oil and safe-haven assets in focus.