Iran's Gulf War: Measuring the Flow of Risk and Price Impact

The physical scale of the disruption is stark. Since the war began, at least 18 ships have been attacked in the Gulf, with at least 150 vessels now stranded in the Strait of Hormuz and surrounding waters. This chokepoint, which handles about 20% of global oil, is effectively closed after Iran's Revolutionary Guard Corps declared it "closed" and any vessel attempting passage will be "set ablaze." The immediate financial impact is a direct flow of risk into markets.

That risk has already surged into price action. The disruption and fears of prolonged closure have caused oil and European natural gas prices to jump, with Brent crude futures up as much as 13 percent. This isn't just a geopolitical headline; it's a tangible flow of capital seeking safety or positioning for scarcity, directly pressuring energy costs worldwide.

The Insurance Backstop Crumbles: A $500M+ Market Exposed

The financial flow of risk just hit a critical wall. Leading insurers including Gard, Skuld, and the London P&I Club have cancelled war risk cover for ships in the Gulf, with effect from March 5. This removal of a key underwriting backstop is a direct liquidity shock to the shipping market, likely to further dissuade owners from navigating the region.

The market exposed is substantial. Beazley, a major player, wrote just over $500 million in marine premiums last year, representing about 8% of its total book. The cancellation of this specific coverage creates a vacuum where shipowners must now bear the full, un-insured risk of operating in a declared war zone. This forces a hard calculation on every voyage.

The price impact is immediate and severe. War risk premiums have already risen as high as 1% of the value of the insured asset, adding hundreds of thousands of dollars in costs for every major shipment. This surge in insurance costs directly flows into freight rates, exacerbating the physical flow disruption and pushing up the cost of global trade.

Catalysts and Scenarios: The Path to Price Stabilization

The primary catalyst for price stabilization is a de-escalation. UAE officials have made it clear that Iran must halt attacks on its neighbors before any diplomatic talks can proceed. This sets a binary condition: silence from the Gulf is the prerequisite for a negotiated end to the conflict and the reopening of the strait.

The major risk is a catastrophic expansion of the war. Iran's new supreme leader has vowed to open "other fronts where the enemy has little experience" if the U.S. and Israel persist. This threat of a broader regional conflict directly challenges the current containment, which is critical for market stability. Any new front would further disrupt global trade and energy flows.

The potential U.S. or allied naval escort operation for tankers represents a high-cost, high-risk attempt to force a reopening. Such a move would require massive asset diversion and carries a high probability of direct confrontation. The International Energy Agency has already released 400 million barrels to offset the "effective closure" of the shipping channel, but this is a temporary buffer. The current oil supply disruption is the largest in the history of the oil market, and the price impact will remain severe until the physical chokepoint is cleared.