Investors brace for a 'long grind' as Iran war escalation dims hopes of an early end

Traders work on the floor of the New York Stock Exchange during afternoon trading on June 10, 2026 in New York City. Michael M. Santiago | Getty Images As hostilities in the Middle East flare up again, investors are increasingly grappling with the possibility of a prolonged conflict and pricing in a "long grind." The latest escalation comes after U.S. Central Command struck Iranian military targets, drawing retaliation from Tehran, which attacked Gulf countries on Thursday. U.S. …