The United States has moved to impose a blockade on Persian Gulf shipping lanes, targeting passage through the Strait of Hormuz, the 21-mile chokepoint through which approximately 20% of global oil supply and 18% of LNG transits daily. This is not a sanctions escalation or a diplomatic warning: it is a physical interdiction of the world's most critical energy corridor, and it demands immediate all-asset repricing that VIX at 19.12 is nowhere near capturing. Japan tops the vulnerability table, sourcing roughly 90% of its crude from the Middle East with almost no strategic reserve depth to cover a sustained disruption; South Korea, similarly dependent at around 70% Middle Eastern crude, runs refinery utilization rates that leave almost no buffer for spot-market substitution. India, now the world's third-largest oil importer and deep into a Russian-crude diversification program that itself transits sensitive routes, faces a double bind: its non-Hormuz alternatives are insufficient to replace volume at scale. China, the largest single buyer of Gulf crude, holds strategic petroleum reserves estimated at 90-plus days of consumption, buying time but not immunity; Beijing's response calculus is the variable that turns a supply shock into a geopolitical cascade. European nations, particularly those with Mediterranean refining complexes geared for Middle Eastern grades, face a feedstock mismatch that West African or North Sea alternatives can only partially resolve. Brent spot at $97.19 and WTI at $89.95 live are already in what the FRED monthly data frames as a 26% and 22% one-month surge respectively; a physical blockade that persists beyond two weeks would mechanically push Brent through $130 and WTI through $110 on the most conservative demand-destruction models. The dollar, already weak at DXY 118.86, faces a contradictory pull: risk-off bids support it tactically while petrodollar recycling disruption and Gulf sovereign wealth fund repatriation pressure it structurally. The market, as usual, has not yet decided which of those forces wins.

Gold at $4,863.67 is already at all-time highs and completely unmoved by the blockade news in thin after-hours trading, which is less a sign of complacency than of a market that had already priced a geopolitical premium into a safe-haven position. RRPONTSYD at $0.306bn confirms the liquidity buffer that sustained risk assets through prior shocks is effectively gone. HY OAS at 2.95bp (FRED daily) remains disturbingly tight given the credit-equity divergence that has already widened to -4.3% over 20 days, and a sustained energy shock into this credit structure is the specific mechanism that converts a credit warning into a credit event.

The countries that bleed fastest are those with zero substitution flexibility and no reserve depth: Japan and South Korea face GDP-level shocks if the blockade holds beyond 30 days, and both central banks lose monetary policy degrees of freedom as import costs spike. For the Fed, this is the worst possible news: energy-driven inflation, already transmitting through WTI's one-month surge into April-May CPI, gets a second and more violent impulse that makes the cut-vs-hike trap binary and brutal. The 15-20% probability of PCE at or above 3.0% assigned in current risk scenarios almost certainly needs to be revised upward.