The United States announced plans to impose the toughest sanctions in history on Iran and implement a naval blockade targeting Tehran and its trading partners as of August 24, 2026 [1, 2, 3]. Treasury Secretary Scott Bessent is set to unveil details of the new economic isolation plan aimed at countries including China, India, Turkey, and the UAE [2, 3].

In response, Iran has threatened to shut down all oil exports through the strategic Strait of Hormuz and the Persian Gulf if the economic pressure persists. Mohsen Rezaei, the former Revolutionary Guards chief, warned, "If the economic war continues, not a single drop of oil will be exported, neither through the Strait of Hormuz nor from anywhere in the Persian Gulf" [1].

The Strait of Hormuz remains a chokepoint controlled by Iran’s Islamic Revolutionary Guard Corps. The IRGC has previously used drones to attack shipping vessels in the Gulf, raising security concerns [2, 3]. Iran’s Houthi allies in Yemen have also restricted Red Sea shipping and threatened blockades at the Bab el-Mandeb strait, further complicating maritime traffic in key trading routes [1].

Iran has repeatedly retaliated against Gulf states and others supporting U.S. policies with attacks targeting military bases and energy infrastructure in recent months [1]. A drone strike occurred near the Suez Canal in early August, followed by an attack on the Saudi Red Sea oil terminal at Yanbu on Monday, which has fueled anxiety in global oil markets [1].

These Iranian attacks and threats have already significantly reduced shipping traffic through the Strait of Hormuz, which previously carried about a fifth of the world’s traded energy resources [1]. On August 24, Iran blacklisted 45 tankers alleged to have violated its shipping rules for transit through the Strait [1].

Analysts expect tensions to escalate further. Nate Swanson, a senior fellow at the Atlantic Council, said, "If this is actually effective, at some point, Iran will lash out again – they just will have no alternative" [2]. Iran is likely to step up military strikes across the Gulf to drive oil prices higher and pressure the U.S. to change its policy [2, 3].

Treasury Secretary Bessent’s announcement later today will provide fuller details on the sanctions and blockade strategy, marking a significant escalation in economic pressure on Iran and its regional allies [2, 3].