Trump Vows Economic War As Iran Threatens To Halt All Oil Exports

US Treasury Secretary Scott Bessent has characterized a new campaign of financial sanctions as an economic D-Day, describing it as the single greatest financial offensive ever marshalled against an adversary. In response, Mohsen Rezaei, secretary of Iran's Supreme National Security Council, warned that not a single drop of oil will be exported from the Persian Gulf if the US offensive proceeds.

The escalation follows a six-month conflict that has seen thousands of deaths in Iran and Lebanon. Since strikes began on February 28, US and Israeli operations have killed Iranian Supreme Leader Ayatollah Ali Khamenei and degraded much of Iran's conventional military capacity. While the two nations have not conducted military strikes against each other for weeks, the current shift toward a crushing financial operation aims to sever Tehran's remaining economic lifelines.

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The sanctions, rolled out on Monday, specifically target Iran's trade partners. Scott Bessent signaled that the US would target fearful nations that practice appeasement by maintaining financial ties with Tehran, warning them to consider the consequences of doing so. Bessent specifically called on China to get with the programme, noting that Beijing receives half of its oil imports from the Gulf region.

The conflict has already created significant regional and global distortions. The US recently canceled a joint amphibious landing drill, known as Ssangyong, scheduled for next month with South Korea, citing constraints on force availability due to the war on Iran. In Iraq, the economy has been hit hard by restricted movement in the Strait of Hormuz, derailing a burgeoning tourism recovery.

The Hormuz Flashpoint

The Strait of Hormuz has emerged as the primary point of tension. While Donald Trump maintains the waterway is open and operating, data indicates confirmed crossings have fallen sharply. Commercial traffic remains heavily disrupted, and a projectile recently damaged the engine room of a vessel near Oman, resulting in the reported death of a crew member.

Tehran is now leveraging its position over the waterway through both legislative and military threats:

• Service Fees: Iran's parliamentary security commission has backed legislation that would require vessels permitted to transit the Strait to pay Tehran for services provided along the route.
• Export Blockades: Mohsen Rezaei stated that Iran will regard any country supporting the US economic war as committing an act of war.
• Military Leverage: Despite the loss of conventional capacity, Iran has preserved enough drone and missile capabilities to threaten tankers and Gulf neighbors.

This economic pressure arrives as Iran struggles with damaged infrastructure, high inflation, a weakening currency, and energy shortages. Iranian officials have warned that further punishment could reignite domestic unrest and erode the legitimacy of the Islamic Republic.

Diplomatic attempts to find an off-ramp are being led by intermediaries. Pakistan's army chief, Field Marshal Asim Munir, visited Tehran on Monday to discuss regional security. Analysts cited by Al Jazeera suggest Pakistan is viewed as a facilitator without a personal stake in the outcome, though Islamabad is also motivated by its own reliance on Gulf energy and remittances. Similarly, Oman's Foreign Minister Badr Albusaidi is scheduled to meet with Iranian Foreign Minister Abbas Araghchi on Tuesday to discuss the shared responsibility for the Strait of Hormuz.

The financial stakes extended to global markets on Monday. Brent North Sea Crude fell 1.8 per cent to $92.68 per barrel as investors braced for the sanctions details. Asian markets also declined, with South Korea's Kospi falling 1.4 per cent.

The immediate trigger for further escalation or a shift in strategy remains the specific details of the sanctions package. Scott Bessent is scheduled to hold a press conference at 2pm EDT on Monday to reveal the full extent of the measures intended to isolate the Iranian economy.

Collateral Economic Toll

The financial offensive has coincided with a period of extreme volatility for global markets. According to Tvcnews, Asian stocks generally declined on Monday. This included a 1.4 per cent drop in South Korea's tech-heavy Kospi, occurring after Samsung Electronics disclosed a $80 billion share buyback to stabilize its position following weeks of turbulent trading. Other markets in Tokyo, Shanghai, Taipei, and Wellington also recorded losses.

Domestic instability remains a primary concern for Tehran. Iranian officials noted that the Islamic Republic is already grappling with deep structural weaknesses, including high inflation, energy shortages, and a weakening currency. The current conflict has added the burden of disrupted trade, lost production, and the cost of rebuilding infrastructure destroyed by US and Israeli strikes.

Diplomatic efforts are now attempting to bridge a gap that has existed since face-to-face talks between the US and Iran ceased in June in Switzerland. While Pakistan and Oman seek to facilitate a resolution, the US has simultaneously scaled back other regional commitments. Trump recently ordered the reduction of a separate annual joint military exercise that concluded last Friday, citing costs and the refusal of Seoul to participate in the war on Iran.

As the US seeks to sever remaining lifelines, the next step depends on the specifics of the sanctions package revealed by Scott Bessent during his scheduled 2pm EDT press conference on Monday.