The Strait of Hormuz, a narrow waterway through which 20% of the world’s oil passes, has become a focal point in Iran’s evolving strategy to leverage geopolitical leverage against the United States, according to a 2023 analysis by the International Institute for Strategic Studies (IISS). This approach, rooted in historical precedent, reflects Iran’s long-standing tactic of seizing symbolic or economic assets to extract concessions—a method now adapted to modern strategic realities. “Iran’s calculus has shifted from direct territorial control to asymmetric economic pressure,” said Dr. Nazila Fathi, a senior fellow at the Brookings Institution, in a 2024 interview. “The Strait of Hormuz is the ultimate chokepoint, and its control could disrupt global markets in ways that resonate far beyond the Middle East.”
How the Strait of Hormuz Became a Geopolitical Poker Chip
The strategic significance of the Strait of Hormuz is not new. During the 1980s Iran-Iraq War, both sides targeted oil tankers in what became known as the “Tanker War,” with Iran seizing vessels to deter U.S. military intervention. This pattern of using maritime control as a bargaining chip resurfaced in 2019 when Iranian forces detained a British oil tanker, the Stena Impero, in the Strait. The incident, which lasted 57 days, underscored Iran’s willingness to use economic leverage as a diplomatic tool. “This isn’t just about oil; it’s about signaling to the U.S. that any military escalation risks global economic instability,” said Dr. Kambiz Rohanizadeh, a political scientist at the University of California, Los Angeles.
Recent data from the U.S. Energy Information Administration (EIA) highlights the stakes: 17 million barrels of crude oil and refined products traverse the Strait daily, with 15% of global liquefied natural gas (LNG) shipments also passing through. A 2024 report by the RAND Corporation estimated that a prolonged closure of the strait could trigger a 30% spike in global oil prices, with ripple effects on inflation and supply chains worldwide. “The economic cost of such a disruption would be catastrophic for the U.S. and its allies,” said Michael Eisenstadt, a senior fellow at the Washington Institute for Near East Policy.
From Historical Tactics to Modern Asymmetric Warfare
Iran’s strategy of “seizing value to extract concessions” has deep roots in its post-1979 revolutionary doctrine. During the 1980s, the regime used the seizure of U.S. embassy staff in 1979 as a bargaining chip, while in the 1990s, it leveraged control over the Persian Gulf’s maritime routes to pressure Gulf Cooperation Council (GCC) states. Today, the approach has evolved into a more sophisticated form of asymmetric warfare, combining cyberattacks, naval blockades, and diplomatic maneuvering.
“Iran’s goal is not to provoke a full-scale war but to create a ‘cost-benefit’ scenario where the U.S. faces more economic pain than strategic gain,”
said Dr. Fathi, citing a 2024 study published in The Journal of Strategic Studies.
This tactic mirrors the 2021 cyberattack on the Colonial Pipeline, which, while not directly linked to Iran, demonstrated how critical infrastructure can be weaponized to force concessions. A 2023 report by the Center for Strategic and International Studies (CSIS) noted that Iran has invested heavily in cyber capabilities, with 125 state-sponsored hacking groups identified since 2015. “The digital and physical realms are now intertwined,” said Dr. Eisenstadt. “A blockade of the Strait could be accompanied by cyberattacks on U.S. energy grids, compounding the pressure.”
The U.S. Response: Deterrence, Diplomacy, and Military Posturing
The Biden administration has sought to balance deterrence with diplomacy, maintaining a naval presence in the region while engaging in backchannel talks with Iran. In 2024, the U.S. and Saudi Arabia announced a joint maritime security initiative, aimed at safeguarding the Strait. However, analysts suggest this approach may not fully address Iran’s strategic calculus.
“The U.S. is caught between its commitment to free trade and its need to prevent a humanitarian crisis,”
said Dr. Rohanizadeh, referencing the 2022 UN report on global food insecurity. “If Iran blocks the Strait, the impact on food imports from the Horn of Africa could be devastating.”
Historical precedents offer mixed lessons. During the 2018 U.S. withdrawal from the Iran nuclear deal, Iran responded by enriching uranium, a move that escalated tensions but did not trigger a direct confrontation. Similarly, in 2020, the U.S. assassination of Qasem Soleimani led to Iranian attacks on U.S. facilities in Iraq, but not a full-scale war. “Iran’s leaders are rational actors who weigh the risks of escalation,” said Dr. Fathi. “However, the current geopolitical climate—marked by energy crises and regional instability—raises the stakes.”
What’s Next? The Unpredictable Calculus of Power
The coming years will test the resilience of global markets and diplomatic frameworks. A 2024 survey by the World Economic Forum found that 68% of energy executives consider the Strait of Hormuz a “high-risk” choke
