A ceasefire has held between the US and Iran after weeks of fighting, but Washington is weighing ways to keep pressure on Tehran. Officials are considering either extending a naval blockade of Iranian ports or launching further strikes to force concessions. Reporting indicates the US may pursue a long-term blockade aimed at squeezing Iran’s economy until it abandons its nuclear ambitions, surrenders roughly 400 kilograms of highly enriched uranium and reduces its regional influence.
The Strait of Hormuz has become central to the standoff. The narrow waterway is vital for global energy flows, and UN data show ship traffic through the strait has fallen by over 95% since the conflict began. The disruption affects not only crude oil but also fertilizers and petrochemicals, raising warnings from International Energy Agency chief Fatih Birol that the confrontation could trigger an unprecedented energy crisis.
Iran’s revenues are heavily oil-dependent: roughly one-third to nearly half of government income comes from oil and gas. Since the US tightened its maritime restrictions, Iranian exports have dropped sharply. Analysts say Iran has increasingly had to hold crude in storage because few tankers are available to depart the Persian Gulf. That has forced production cuts—a pattern Iran has faced before under sanctions. Some experts estimate Iranian output could decline by about 1 million barrels per day within a month, bringing production close to domestic consumption levels. Still, Iran has roughly 170 million barrels trapped on tankers that left before tighter enforcement, providing some revenue for the next two to three months.
Short-term, Iran appears capable of weathering the blockade, using stored cargo and constrained output to manage revenues. But prolonged suspension of production risks more lasting harm. Extended shutdowns can damage wells and disrupt flow; whether that occurs depends on how long and intense a blockade is maintained.
Economic strain inside Iran is mounting. Years of mismanagement and corruption, compounded by sanctions, have left public finances fragile. Inflation averaged an estimated 51% last year, with forecasts near 69% for 2026. The government faces growing difficulty meeting domestic obligations, including payments to security and military personnel. Experts caution that a long-term blockade would deepen these problems and could destabilize Iran domestically.
Analysts also note limits and risks for the US. Sustaining a prolonged maritime blockade requires significant military resources, raises legal questions and carries political dangers. A long-term restriction of Gulf shipping would also harm other countries, especially Asian economies heavily reliant on regional energy supplies, and could increase tensions across the Persian Gulf. These potential unintended consequences factor into whether Washington’s pressure can be controlled or will create broader problems.
In sum, Iran can absorb a naval blockade over the short term by cutting output, using stored cargo and drawing on prior exports, but a protracted blockade would inflict severe economic damage, risk permanent harm to oil infrastructure, and carry substantial geopolitical and legal risks for the enforcer and global markets.