U.S. Threatens “Toughest” Sanctions on Iran; Tehran Vows Retaliation

On August 24, 2026, U.S. Treasury Secretary Scott Bessent warned that Washington would impose “the toughest sanctions in history” on Iran. Iran’s newly appointed head of the Supreme National Security Council, Mohsen Rezaei, and Foreign Minister Abbas Araghchi dismissed the sanctions as ineffective and warned neighboring states against joining the U.S. “economic war.”

Abbas Araghchi Says US Sanctions Threats Will Fail To Defeat Tehran: 12 outlets compared Araghchi dismisses US sanctions threat as failed 'repeated scenario' The HinduThe IndependentThe Guardian

The confrontation escalated after the United States and Israel launched coordinated airstrikes on Iran on February 28 2026, marking the start of a six-month conflict that has damaged Iran’s infrastructure and caused civilian casualties. Existing sanctions have strained Iran’s economy, and the blockade of the Strait of Hormuz—through which roughly one-fifth of global oil passes—has driven up oil prices worldwide. Diplomatic efforts, including a Pakistan-brokered Memorandum of Understanding on June 17 2026 and a ceasefire on April 8 2026, have since collapsed.

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• China purchases more than 80 % of Iran’s shipped oil, according to 2025 analytics from Kpler.

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• The blockade of the Strait of Hormuz has pushed global oil prices upward, though exact figures vary across reports.

The Guardian

• U.S. Position – Bessent framed the forthcoming measures as a response to Iran’s missile and drone attacks on regional shipping. President Trump warned that any country providing “any type of lifeline” to Iran will face “economic consequences.”

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• Iranian Foreign Ministry – In a video posted on Telegram on August 23, 2026, Araghchi described the U.S. shift from military operations to “old plans” as a sign of desperation and urged Washington to engage “respectfully” and seek a solution based on “justice and honour.”

Araghchi dismisses US sanctions threat as failed 'repeated scenario'

• Security Council Leader – Rezaei told state television that Iran would target alternative oil-shipping routes if neighboring states joined the sanctions campaign, labeling such states “enemies” and promising to “target their interests.” He warned Iran has not yet attacked American economic assets but reserves that option if sanctions intensify.

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• Regional Actors – Pakistan’s army chief Asim Munir is slated to visit Tehran on August 24, 2026 to discuss the sanctions threat, while Egypt’s foreign ministry reports ongoing attempts to revive U.S.–Iran negotiations. France and Saudi Arabia are preparing a ministerial task-force to explore alternative Gulf shipping routes, including Omani ports and new pipeline projects.

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• “They would love to make a deal, but they’re not ready to make the right deal, in my opinion,” — Mr. Trump

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• “So far, we have only targeted military bases, but if they want to impose economic sanctions on us, the United States has oil and economic companies around Iran and elsewhere, and we will strike them,” — Rezai

The Guardian

• “The fact that they (U.S. leaders) have abandoned military operations... and returned to old plans shows that they are desperate.” — Abbas Araghchi

Abbas Araghchi Says US Sanctions Threats Will Fail To Defeat Tehran: 12 outlets compared

• Iran’s security council is in talks with Oman over management and fees for the Strait of Hormuz.

The Guardian

• A France-Saudi task-force on energy logistics is scheduled to meet at the ministerial level next week to identify projects that could bypass the strait.

The Guardian

• The U.S. Treasury is expected to release the detailed sanctions package shortly after the August 24 briefing, with implementation timelines yet to be disclosed.

The Hindu