Strait of Hormuz Closure: Rising Tensions and Global Economic Implications

As tensions escalate between Iran and the United States, the Strait of Hormuz, a critical waterway for global oil and gas supplies, has become a focal point. Recent Iranian military exercises and a temporary closure of sections of the strait signal a potential disruption to energy markets and international trade. This article examines the strategic importance of the Strait of Hormuz, the factors driving current tensions, and the potential consequences of a prolonged disruption.

What is the Strait of Hormuz?

The Strait of Hormuz is the world’s most significant oil chokepoint, connecting the Persian Gulf to the Arabian Sea and the Indian Ocean. It lies between Iran to the north and Oman and the United Arab Emirates to the south. Approximately 50km (31 miles) wide at its entrance and exit, it narrows to about 33km (20 miles) at its tightest point. It is the only maritime link between the Gulf and the Arabian Sea, accommodating even the world’s largest crude carriers.

Oil and Gas Flows Through the Strait

Approximately 20 million barrels of oil transited the Strait of Hormuz each day in 2024, representing nearly $500 billion in annual energy trade . Crude oil originates from Iran, Iraq, Kuwait, Qatar, Saudi Arabia, and the UAE. The strait also handles roughly a fifth of global Liquefied Natural Gas (LNG) shipments, with Qatar being the primary exporter through this route .

Where Does the Oil and Gas Go?

The majority of crude oil and LNG transiting the Strait of Hormuz is destined for Asian markets. In 2024, approximately 84 percent of crude oil and condensate shipments went to Asia, with China, India, Japan, and South Korea accounting for 69 percent of the total . A similar pattern exists for LNG, with 83 percent of volumes heading to Asia.

Recent Developments and Iranian Actions

This month, Iran signaled its potential response to a possible attack by announcing the temporary closure of sections of the Strait of Hormuz and conducting live-fire military drills . This move, the first such closure since the 1980s , served as a warning about the economic consequences of military action against Iran. The Islamic Revolutionary Guard Corps began military exercises in the strait on February 17, 2026 . Simultaneously, indirect talks between Iran and the United States regarding Iran’s nuclear program are ongoing in Geneva .

Iran’s Capabilities and International Law

Under international law, Iran has sovereignty up to 12 nautical miles (22km) from its coastline. At its narrowest point, the Strait of Hormuz falls within the territorial waters of both Iran and Oman . Iran possesses naval mines, fast attack boats, and submarines capable of disrupting maritime traffic. The Iranian parliament previously approved a motion to close the Strait of Hormuz, though the final decision rests with Supreme Leader Ali Khamenei.

Potential Impact on Global Oil Prices and Economy

A full or partial closure of the Strait of Hormuz would significantly impact oil prices, potentially spiking them to over $100 per barrel . Saudi Arabia, which exports roughly 5.5 million barrels per day through the strait, would be particularly affected. While some Gulf producers have limited pipeline capacity and storage reserves, these may not be sufficient to mitigate a serious disruption. Higher energy prices would lead to increased production costs, inflation, and broader macroeconomic consequences .

Regional Dynamics

The situation is further complicated by regional dynamics, including the potential for disruption in the Bab al-Mandab Strait by the Houthi group in Yemen, which has ties to Iran. Coordinated pressure on both the Strait of Hormuz and Bab al-Mandab Strait would amplify risks to global shipping, energy markets, and international trade.