Hormuz: The Global Economy's Unfolding Chokehold

The Strait of Hormuz, a critical maritime passage, has rapidly escalated into the central flashpoint of a broader conflict, now directly dictating the trajectory of the world economy. Following the attacks on two tankers transiting the strait in Omani waters on a Tuesday, the geopolitical calculus has become starkly clear. Gulf countries swiftly condemned the incidents, assigning blame to Iran, which precipitated US attacks on Iranian territory. Tehran's response was equally direct, striking Bahrain and Kuwait, leading US President Donald Trump to declare the previously signed memorandum of understanding (MoU) between Iran and the US void.

This sequence of events underscores how the strait has become the hardest issue to resolve in the US-Israel war with Iran, which commenced on February 28. Disagreements over its future now overshadow questions about Iran’s nuclear program, which have been effectively set aside. The immediate consequence of this escalating tension is a costly disruption to traffic in the Strait of Hormuz, impacting Iran, its Gulf neighbours, and a global economy that has, for four and a half months, been absorbing what the International Energy Agency’s Fatih Birol termed "the largest supply disruption in the history of the global oil market."

**Tehran's Costly Leverage**

For Tehran, the strait represents its strongest card, albeit one with an incredibly steep price. Since the war's outset, Iranian forces have mined the strait, launched attacks on vessels, and cut traffic through the passage by approximately 95 percent. This aggressive posture leverages the strait's immense global importance: roughly a fifth of the world’s oil and an equivalent share of its liquefied natural gas (LNG) typically traverse Hormuz. Crucially, no existing Gulf pipeline capacity can fully compensate for such a significant disruption.

However, this strategic chokehold has proven to be a double-edged sword for Iran. By strangling the global energy lifeline, Tehran has effectively tightened the noose around its own economy. Iranian crude, once selling at a modest $3 a barrel less than international benchmarks, now commands a 20 percent discount. The country's oil exports suffered a catastrophic collapse of over 90 percent in May, primarily due to stringent US naval enforcement targeting its shadow fleet. Even prior to the conflict, the World Bank projected a contraction for Iran's economy in 2026, a forecast now compounded by the severe impact of collapsed oil sales.

**Sovereignty Versus Global Commerce**

The economic pressures intensified further when a 60-day US Treasury waiver, issued on June 22 to permit Iran to sell oil at full market rates until August 21, was renounced following the Tuesday attacks. This forms the economic backdrop to Iran's persistent insistence on asserting joint authority over the strait and proposing a system of transit fees or "service charges" for passing ships. Washington, however, has unequivocally stated that Iran lacks the authority to levy tolls in international waters, which are governed by the right of transit passage under the Law of the Sea.

For Iran, this dispute extends beyond mere revenue generation, which would be modest compared to its oil income. The core objective is to establish precedent and sovereignty over this critical chokepoint. In Tehran's strategic calculus, the Strait of Hormuz is its primary leverage point once potential sanctions relief and frozen-asset releases are negotiated, signaling a long-term play for control rather than short-term financial gain. The global economy, consequently, finds itself precariously tied to the unfolding drama in this narrow, yet globally significant, waterway.