The Strait of Hormuz: Energy Security and the High-Stakes Legal War

The Strait of Hormuz is more than a geographic bottleneck; it’s a volatile intersection of global energy security and conflicting interpretations of international law. As a primary choke point through which approximately 20% of the world’s oil passes, this narrow waterway is currently the center of a high-stakes legal and military standoff between the United States, and Iran. With the U.S. Implementing a blockade and Iran partially closing the strait to specific vessels, the world is witnessing a cycle of “lawfare” where divergent legal frameworks are used to justify aggressive maritime actions.

The Economic Stakes: A Global Energy Choke Point

The strategic importance of the Strait of Hormuz cannot be overstated. Located between Iran to the north and Oman and the United Arab Emirates to the south, the corridor connects the Persian Gulf to the Arabian Sea. At its narrowest point, the strait is just 21 nautical miles wide, meaning every tanker must travel within the territorial waters of either Iran or Oman.

The scale of the energy trade passing through this corridor is immense:

• Oil Volume: Roughly 20 million barrels of oil flow through the strait daily, accounting for about one-fifth of the global supply.
• LNG Trade: Approximately 20% of the world’s liquefied natural gas moves through the waterway.
• Market Value: In 2025, the energy trade passing through the corridor was valued at roughly $600 billion annually, with nearly 3,000 ships transiting each month.

Because there’s no alternate sea route, any disruption is felt immediately by global markets and consumers, putting major economies like China and India in the crosshairs of the escalating pressure.

The Legal Divide: UNCLOS vs. The 1958 Convention

At the heart of the conflict is a fundamental disagreement over the “law of the sea.” Both nations utilize different legal frameworks to justify their actions, leading to a stalemate over who controls the water.

The U.S. Perspective: Transit Passage

The United States views the Strait of Hormuz exclusively as an international waterway. The U.S. Interpretation relies on the United Nations Convention on the Law of the Sea (UNCLOS), which requires “transit passage.” This standard allows for the unimpeded navigation of ships and aircraft through straits used for international navigation.

The Iranian Perspective: Innocent Passage

Tehran maintains that the waters are part of its territorial sea. Iran relies on the 1958 Territorial Seas Convention and a 1949 International Court of Justice ruling in the Corfu Channel case. These older standards establish the right of “innocent passage,” which allows coastal states to impose restrictions and limitations on ships that might threaten their security and order.

Escalation and Active Conflict

The tension has recently escalated into active conflict. Following American-Israeli aggression that resulted in the assassination of Iran’s supreme leader and several senior commanders, the military confrontation has intensified. This has manifested in two primary ways:

• The U.S. Blockade: President Donald Trump has implemented a blockade of the passage, which has already resulted in ships being turned back.
• Iranian Partial Closure: Iran has implemented a partial closure of the strait specifically targeting commercial vessels and oil tankers belonging to the United States, Israel, or their allies.

This is not the first time the region has seen military friction. In 2015 and 2019, the Iranian Revolutionary Guard Corps (IRGC) shot down U.S. Global Hawk drones, claiming they violated Iranian airspace, while the U.S. Maintained the drones were in international waters.

Key Takeaways for Investors and Markets

• Market Volatility: Because 20% of global oil and LNG pass through the strait, any legal or military escalation triggers immediate price spikes in energy markets.
• Legal Uncertainty: The clash between UNCLOS and the 1958 Convention means there is no agreed-upon “rulebook,” increasing the risk of miscalculation.
• Geopolitical Risk: The involvement of major economies like China and India adds a layer of global complexity to the regional dispute.

Frequently Asked Questions

Can Iran legally close the Strait of Hormuz?

According to the 1958 Geneva Convention on the Territorial Sea—which Iran ratified—straits used for international navigation cannot be arbitrarily closed. Foreign ships under this system enjoy “non-suspendable innocent passage.”

What is the difference between transit passage and innocent passage?

Transit passage (under UNCLOS) is more permissive, allowing for the free movement of international shipping and aircraft. Innocent passage (under the 1958 Convention) gives the coastal state more power to restrict ships that it deems a threat to its security.

Looking Ahead

The current standoff is a dangerous game of “lawfare” where legal arguments are used to mask military objectives. As the U.S. Threatens ground operations to seize Iranian islands overlooking the strait to secure shipping lanes, the risk of a full-scale maritime conflict remains high. For the global economy, the stability of the Strait of Hormuz remains the single most critical variable in energy price predictability.