Markets Misjudged Hidden Supply Chain Damage From Iran War

Beyond Oil Prices: The Real Economic Crisis

While stock markets initially focused on oil price spikes when the Iran war began, the closure of the Strait of Hormuz has led to what the International Energy Agency has characterized as the "largest supply disruption in the history of the global oil market," echoing the 1970s energy crisis through acute supply shortages, currency volatility, inflation and heightened risks of stagflation and recession . What markets failed to anticipate was the cascading collapse of critical supply chains that extend far beyond energy.

Fully 20% of the world's oil supply and 20% of the world's supply of liquefied natural gas goes through the Strait of Hormuz. Right now, the Strait is effectively closed. Zero ships have gone through it in the past 24 hours, compared to well over 100 on a normal day . This complete shutdown has triggered shortages of commodities that rarely make headlines but power modern life.

Before the Iran war, the Gulf supplied roughly 20 percent of global seaborne jet fuel, 10 percent of seaborne diesel, 23 percent of ammonia demand, and 33 percent of helium production. Half of global seaborne sulfur came from the Gulf, too, as did 9 percent of the world's aluminum . These disruptions create a domino effect that markets are only beginning to understand.

Hidden Infrastructure Damage Compounds Crisis

Much of the region's refining capacity has been damaged or destroyed during the conflict, and the infrastructure required to process and export commodities may take years to fully rebuild. The duration of the strait's closure and the state of the US–Iran conflict when the waterway is reopened will affect how quickly shipping returns . This physical damage means the crisis won't end simply when diplomatic agreements are signed.

Qatar is the world's third-largest producer of liquefied natural gas, and all of its production has to go out through the Strait of Hormuz. That production is completely shut down now. We've not just lost oil supply, we've also lost 20% of the world's seaborne natural gas trade . The ripple effects extend to fertilizer production and food security globally.

Nitrogen-based fertilizer, which in a sense is just natural gas in a different form, may be one of the most important non-energy commodities that's not getting onto the market. It's planting season in the Northern Hemisphere, so a lot of countries will need that fertilizer. They may not have as much as they want, and what they can get might be very expensive, which has implications for food prices months from now .

Asian Markets Face Disproportionate Impact

The Asian markets hit hardest are the most vulnerable to oil-supply disruption through the strait. China, South Korea, India and Taiwan have high dependency on Hormuz-transiting oil. EIA estimates that 84% of the crude oil and condensate and 83% of the liquefied natural gas that moved through the Strait of Hormuz went to Asian markets in 2024 . This concentration of dependency explains why Asian stock markets have underperformed despite being geographically distant from the conflict.

What makes supply-chain exposure particularly consequential is its cascading nature. The industries affected aren't just affected themselves — each affected industry feeds inputs into hundreds of others, turning one shock into many. This creates tier-2 supply-chain effects with global ramifications . Manufacturing sectors from petrochemicals to electronics face mounting pressure as critical inputs become scarce or prohibitively expensive.

India maintained significant economic and energy interests in the Persian Gulf, relying on the region for nearly 60% of its petroleum imports. This dependency is especially notable in the fertilizer sector, with over 40% of India's urea and phosphate sourced from the region. Following a drop in LNG output from Qatar, India reduced production at three urea plants .

Long-Term Structural Changes Ahead

Regardless of when the Strait reopens, the energy security calculus for every major importing nation has changed permanently. Investment in pipeline diversification, strategic storage capacity, and supply chain resilience will define the commodity infrastructure agenda for the next decade . Companies and countries are already scrambling to build alternative supply routes that bypass this critical chokepoint.

Even an optimistic scenario – a ceasefire within four to six weeks – would leave the global market facing months of SPR rebuilding, infrastructure repair, and energy security-driven stockpiling. In a pessimistic scenario – a conflict extending beyond two to three months – several Asian and African economies risk moving into genuine fuel scarcity . The economic transformation underway extends far beyond temporary price volatility.

The Iran war has exposed how deeply interconnected global supply chains have become, and how vulnerable they remain to single points of failure. While markets initially reacted to obvious energy price shocks, the lasting impact will come from the fundamental restructuring of trade routes and supply relationships that companies and countries are now forced to undertake. This infrastructure crisis may prove more economically significant than the military conflict itself.