POLITICS

U.S. Treasury to Sanction Iran and Its Trading Partners: “You Are Either With Us or Against Us”

PUBLISHED Aug 21, 2026, 1:24 PM ET

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U.S. Treasury Secretary Scott Bessent said Aug. 20 that Washington will impose the “toughest sanctions in history” on Iran, escalating an economic campaign intended to pressure Tehran without resuming large-scale military operations. Bessent told CNBC that the United States would seek coordinated international isolation and warned countries continuing to transfer money, buy Iranian oil or facilitate shipping could face enforcement action. President Donald Trump had threatened economic consequences a day earlier for entities providing Iran an “economic lifeline.” Bessent said further details would be announced Monday and predicted the pressure would collapse Iran’s government, a forecast that remains unverified. Iran’s Foreign Ministry condemned the measures as economic terrorism and said they would not weaken Tehran’s resolve. China, Iran’s largest oil customer, opposed unilateral sanctions and urged diplomacy. The escalation comes as disruptions around the Strait of Hormuz have pushed oil prices higher, raising inflation risks for American consumers and businesses.

By James Porter | JQJO News

Timeline of Events

On May 8, 2026, Treasury sanctioned entities supporting Iranian arms.
On May 27, 2026, Treasury sanctioned Iran’s maritime extortion apparatus.
On June 10, 2026, Treasury sanctioned networks supporting Iranian weapons.
On July 14, 2026, Treasury intensified pressure on Iranian shipping.
On August 7, 2026, Treasury targeted Iran’s clandestine currency networks.
On August 19, 2026, Trump threatened consequences against Iran supporters.
On August 20, 2026, Bessent announced sanctions and urged isolation.
On August 21, 2026, Iran vowed to overcome new sanctions.
On August 24, 2026, Bessent is expected to detail sanctions.
On September 2026, enforcement could pressure Iran’s oil revenues further.

News Intelligence

Immediate US impact: U.S. consumers could face energy costs if oil supplies tighten.
Possible long-term US impact: Prolonged sanctions could deepen energy volatility and complicate inflation management.
Most affected groups: Consumers, refiners, shippers, exporters, banks, and energy-intensive businesses face exposure.
Reader priority: Readers should compare Treasury documents, Iranian responses, and markets.