US Prepares ‘Toughest’ Sanctions on Iran as Strait of Hormuz Traffic Stalls

Marcus Wong, Economy & Markets Analyst (Toronto)
5 Min Read
⏱️ 4 min read

Sanctions on the Horizon

The United States and Iran have exchanged stark warnings ahead of Monday’s scheduled announcement of sweeping American economic penalties that could cripple the Islamic Republic and its key trading partners, notably China. Treasury Secretary Scott Bessent will hold a press conference at 2 p.m. EDT on Monday, pledging to unveil “the toughest sanctions in history” while urging Beijing to cooperate with Washington. China, which purchases more than 80 per cent of Iran’s exported oil according to 2025 data from Kpler, has called for diplomatic restraint. The United Nations‑backed diplomatic corps in Beijing stresses that any unilateral action risks destabilising global energy markets. The United States insists the measures are necessary to curb Tehran’s illicit activities and to pressure its allies.

Strait of Hormuz Stalled

Only four commodity vessels transited the Strait of Hormuz on Thursday, none of them large crude carriers or liquefied natural gas tankers, ship‑tracking data revealed, leaving thousands of seafarers stranded on hundreds of ships. The US military has managed to move a seven‑day average of eight million barrels a day through the narrow waterway, a figure that pales in comparison with the more than 20 million barrels per day that flowed before the conflict, representing roughly one‑fifth of global consumption. Energy Secretary Chris Wright noted that the US naval presence has helped keep a minimal flow alive despite Tehran’s threats to strike any unauthorized tanker attempting passage. The near‑total halt of shipments underscores Tehran’s leverage, which it wields by threatening force against any vessel deemed to violate its maritime restrictions.

Strait of Hormuz Stalled

Tehran’s Military Posturing

Iran’s armed forces remain capable of disrupting oil tanker traffic and striking regional adversaries with an extensive missile and drone arsenal, despite severe damage to its navy and air force from recent US attacks. Major General Ali Abdollahi, chief of staff of the Iranian armed forces, vowed that any hostile moves would be met with “crushing, punishing and devastating responses.” President Masoud Pezeshkian, however, called for a diplomatic resolution, arguing that ending the war now would preserve Iran’s dignity and highlight what he described as America’s violations of international norms. The Iranian parliament speaker, Mohammad Baqer Qalibaf, warned that the country’s economic survival hinges on food security, financial turnover, growth and production, not merely on military might.

Economic and Political Strain

The Iranian economy has been severely battered by sustained US pressure, with inflation rising and foreign exchange reserves dwindling, prompting calls for urgent relief. Casualty figures reveal that thousands have died, including 168 Iranian schoolchildren on the war’s first day, while the United States reports over 750 of its military personnel wounded and 18 killed. President Trump, who has yet to achieve his stated goals of dismantling Iran’s nuclear programme – which remains opaque after UN inspectors were expelled in 2025 – and of fomenting internal uprising, warned that Iran is “not ready to make the right deal.” Tehran’s leadership, while maintaining a combative stance, also signals openness to dialogue, reflecting the fragile balance between confrontation and negotiation.

Economic and Political Strain

Why it Matters

The impending US sanctions could reshape global energy flows, intensify pressure on China – the primary buyer of Iranian oil – and exacerbate humanitarian challenges within Iran, where economic collapse threatens social stability. A miscalculation in the Strait of Hormuz could trigger a wider maritime crisis, affecting markets far beyond the region. The interplay of hardline posturing and diplomatic overtures suggests that the coming weeks will determine whether the conflict escalates into a full‑scale energy confrontation or finds a narrow pathway to de‑escalation, with profound implications for oil prices, regional security and the broader international order.

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