Each US-Iran escalation has left oil with a higher floor — Brent back above $100

Brent rose 7.8% and WTI nearly 10% in the week ending September 7, 2026, after the US and Iran resumed attacks on Strait of Hormuz shipping. Each escalation since mid-August added a risk premium — the extra price investors demand for uncertainty — that never fully reversed. Brent climbed from the high $80s back above $100. The market prices sustained choke-point impairment, not a temporary disruption.