Gulf conflict threatens global chip supply as Strait of Hormuz blockade disrupts semiconductor production

The war in the Gulf has a second front that few are watching closely enough. It runs through the Strait of Hormuz, where a blockade is quietly strangling the supply of materials that make modern semiconductors possible. Analysts are sounding an alarm that extends far beyond oil prices: if the strait stays closed, the damage will ripple outward to every corner of the global economy that depends on chips.

The conflict began on February 28, and its effects have already reached across hemispheres in ways that reveal how tightly woven the world's supply chains have become. What happens in the Persian Gulf no longer stays in the Persian Gulf. South Korea's stock market has dropped 18 percent since fighting began, erasing more than $500 billion in market value. Taiwan, which manufactures the vast majority of the world's advanced semiconductors, imports 97 percent of its energy—much of it liquefied natural gas that cannot currently move through the blocked strait. The numbers are stark, but they point to something deeper: a decades-old dependency that was always fragile, now exposed as dangerous.

The real vulnerability lies not in energy alone but in the raw materials that the Gulf supplies to chipmakers everywhere. Helium and bromine are not household names, but they are essential to the semiconductor industry in ways that most people never consider. Helium cools the equipment to ultra-clean temperatures during manufacturing; bromine etches the precise patterns onto silicon wafers that become the circuits in phones, computers, and every connected device. The Gulf produces the majority of both. When the strait closes, these materials stop flowing. When they stop flowing, chip production slows.

This is not a new problem that the war created. Experts have warned for years about this concentration of supply in a single region vulnerable to disruption. What the conflict has done is make the problem impossible to ignore. The blockade has revealed how precarious the situation actually is—how a region thousands of miles away from most chip manufacturers can hold their production hostage. Taiwan and South Korea, the centers of global semiconductor manufacturing, are already feeling the shock. Their markets are reacting not just to the immediate disruption but to the realization that this vulnerability was always there, waiting.

If the strait remains closed for months rather than weeks, the damage will spread far beyond the tech sector. Every industry that depends on semiconductors—automobiles, medical devices, consumer electronics, industrial equipment—will eventually feel the squeeze. The economic consequences could rival or exceed the shock to energy markets, which themselves are already substantial. What makes this particularly dangerous is that semiconductor supply chains are complex and slow to adjust. Unlike oil, which can be rerouted or substituted more quickly, the materials needed for chip production have few alternatives. Once production begins to falter, the effects compound.

The world is learning an old lesson in a new way: in a globalized economy, distance offers no protection. A blockade in the Persian Gulf reaches into the homes and offices of people who have never heard of the Strait of Hormuz. The question now is how long the blockade will hold, and whether the shock to semiconductor supply will force a reckoning with the fragility of the systems we have built to depend on.