When nations exchange strikes, markets exchange certainty for fear — and oil, the lifeblood of modern civilization, becomes the first ledger on which that fear is recorded. Brent crude's approach toward $100 a barrel in September 2026 reflects not merely a price movement but a collective judgment: that U.S.-Iran military escalations have crossed from geopolitical theater into genuine threat to the energy arteries of the world. The consequences do not stay in the oil market — they travel through inflation, through equity valuations, through currencies, touching nearly every corner of the global