The US-Iran war has effectively closed the Strait of Hormuz for ten consecutive days, sending Brent crude above $100/bbl and the S&P 500 to its 2026 low of 6,673. With 20% of global oil transit blocked and the VIX surging to 27.3, Chinese firms face an acute repricing of energy input costs, supply chain risk, and outbound investment calculus across the Gulf region.
The energy shock is structural, not transient. Since the February 28 US-Israel strikes on Iran, Brent has surged 39% from $72 to $100/bbl. Iran's new supreme leader has pledged to keep Hormuz closed indefinitely, while IRGC forces continue targeting regional oil infrastructure. The 10-year Treasury yield has climbed 31 basis points to 4.28% on inflation fears, and the DXY has rebounded toward 100 on safe-haven flows. Goldman Sachs has revised its March Brent average forecast above $100/bbl.
China's exposure is disproportionate. Approximately 40–50% of China's seaborne crude imports transit the Strait of Hormuz, making Beijing the largest single-country beneficiary of Hormuz freedom of navigation. Beijing holds an estimated 1.2 billion barrels in strategic reserves, providing roughly 100 days of import cover, but a prolonged closure would force accelerated pivot toward Russian pipeline supplies (already rising from 1.2 to 1.8 mbd) and domestic renewable substitution. Chinese firms with Gulf-region CAPEX exposure—particularly in UAE, Qatar, and Saudi infrastructure projects—face force majeure risk and contractor evacuation costs.
Watch the March 18–19 ECB-Fed double header. Both central banks face an impossible trilemma: oil-driven inflation argues for hawkishness, but equity drawdowns and growth deceleration demand caution. Base case (60%): Brent consolidates $95–110 as SPR releases partially offset Hormuz disruption. Risk scenario (25%): escalation to direct Iran-Saudi confrontation pushes Brent toward $120+, triggering a 10%+ equity correction. Chinese corporate treasuries should lock in energy hedges at current levels and stress-test Gulf-exposed project economics against a six-month closure scenario.
