Iran Escalation Threatened by US Blockade

Iran faces a potential escalation as U.S. economic warfare tightens its blockade of the Strait of Hormuz.

On Aug. 19, Iranian Central Bank Governor Abdolnaser Hemmati said oil exports had almost stopped and foreign-currency access fell 30 % from a year earlier, worsening the economy beyond the 2018-2020 period of Trump’s pressure campaign.

Economic Impact of the Blockade

Hemmati’s remarks came as the U.S. announced a new “Economic Warfare and Isolation” campaign. Treasury Secretary Scott Bessent added that the blockade would be paired with the toughest sanctions ever imposed, suggesting that heightened economic pressure could eliminate the need for another large-scale military operation. The U.S. Navy’s Defense Secretary Pete Hegseth said the blockade could continue indefinitely, a stance that has intensified the economic strain on Iran’s oil revenue and foreign-currency reserves.

The economic situation described by Hemmati is now worse than the period of 2018-2020, when President Donald Trump launched his maximum pressure campaign. The 30 % reduction in foreign-currency access is a concrete measure of the blockade’s toll.

US Escalation Strategy

Trump’s announcement on Aug. 19 warned that any country providing Tehran with a “lifeline” would face “TREMENDOUS Economic Consequences.” This rhetoric was followed by Bessent’s statement that the blockade would be combined with unprecedented sanctions. The strategy marks a shift from bombing campaigns to economic warfare, aiming to reduce U.S. munitions stockpiles and minimize risk to U.S. forces.

Iran’s Shift from Strategic Patience

For years Iran employed a “strategic patience” approach, responding to attacks while limiting the scale of retaliation to avoid a wider war. The regime’s use of the “axis of resistance” kept much of the fighting away from Iranian territory. However, the naval blockade has altered the calculus. After the U.S. and Israeli strikes that killed Supreme Leader Ali Khamenei and other top officials on Feb. 28, Tehran reassessed its strategy, attacking U.S. bases and closing the Strait of Hormuz.

On Aug. 9, Supreme Leader Ali Khamenei appointed Ahmad Vahidi as IRGC commander, with an appointment letter calling for “maximum deterrence” and readiness for “powerful offensive operations.” The following day, senior advisor Mohammad Reza Naqdi echoed this call for an offensive doctrine.

Political and Military Signals of Escalation

A senior Iranian official told Reuters on Aug. 17 that Iran would move toward a “fully offensive” posture as diplomacy reached a deadlock, ready to launch a “timely and precise” attack to break the U.S. blockade if talks failed.

On Aug. 22, former IRGC commander Mohsen Rezaei, now secretary of Iran’s Supreme National Security Council, said the defense strategy had changed: Iran would no longer be the same before the war, and there would be changes in how the country conducts war and diplomacy. Rezaei warned neighboring countries not to join the U.S. economic campaign, threatening to target their interests if they did.

The hard-line newspaper Kayhan called for attacks on commercial centers and oil facilities in U.S.-hostile countries, while the IRGC-affiliated newspaper Javan noted that Iran would tolerate the blockade only for a “reasonable period” before resuming preemptive operations.

Regional and International Reactions

Alireza Salimi, a member of parliament’s presiding board, warned that if Iran cannot export its oil, no country will be able to export oil. The Financial Times, citing unnamed Iranian sources, reported that Iran was considering attacks on subsea fiber-optic cables in the Strait of Hormuz if Washington resumed military operations.

The escalating rhetoric and strategic shifts suggest that Tehran may seek to make the blockade so costly that Washington would consider easing or negotiating it. The next moves will determine whether the region moves toward a broader conflict or finds a new equilibrium.