The United States has stopped arguing with Iran over who controls the Strait of Hormuz and started prosecuting the transaction itself. On May 27, the Treasury Department added Iran’s Persian Gulf Strait Authority to the Specially Designated Nationals list under Executive Order 13224, the counterterrorism authority reserved for entities that finance terror. The designation does not contest Tehran’s claim to administer the strait. It renders the act of buying passage a sanctionable offense, and in doing so it inverts the entire logic of the toll regime.

Iranian military spokesman Mohammad Akraminia issued an explicit threat this week that countries following the United States in imposing sanctions on Tehran would face difficulties transiting the Strait of Hormuz. The statement, reported by the state-aligned Tasnim news agency, dropped any residual pretense of Iranian restraint in the waterway. Akraminia added that the enemy had recognized it could not break the resolve of Iranian forces and would ultimately be compelled to accept a ceasefire on Tehran’s terms.

The financial architecture sustaining the Islamic Republic runs, in substantial part, through Beijing. According to an estimate by the U.S.-China Economic and Security Review Commission—a body created by Congress to assess bilateral strategic risk—Chinese purchases of Iranian oil reached $31.5 billion in 2025, a figure that accounted for approximately 45 percent of Iran’s entire government budget.

"Chinese [oil] purchases equaled $31.5 billion in 2025, and accounted for 45 percent of Iran's government budget, the U.S.-China Economic and Security Review Commission, created by Congress, estimated last month."
-@PatcohenNYT, @nytimes https://t.co/g27zJpfWrK

The United States has moved to disrupt Iran’s illicit oil trade, sanctioning a China-based petroleum terminal operator, Iranian currency exchange houses, and associated networks in a coordinated State and Treasury action announced May 1, 2026.

The primary target is Qingdao Haiye Oil Terminal Co., Ltd., a Chinese terminal operator that has imported tens of millions of barrels of sanctioned Iranian crude oil since the announcement of National Security Presidential Memorandum 2 (NSPM-2). Haiye allegedly accepted cargo from vessels conducting ship-to-ship transfers with already-sanctioned ships, enabling billions of dollars to flow to Tehran through layered evasion schemes. The deceptive shipping practices involved also posed risks to legitimate maritime commerce.

A tanker that does not appear on tracking screens is not invisible. It is simply operating in the gap between the legal obligation to broadcast its position and the practical inability of enforcement authorities to impose consequences for failing to do so. Iran has exploited that gap systematically and at scale, building a sanctions evasion infrastructure that has kept its oil revenues flowing through periods when official exports were near zero, and learning, in the process, the operational techniques of maritime concealment that have military implications beyond their immediate commercial function.

The strategic logic of Iran’s Hormuz threat rests on the assumption that the cost of closure to the outside world exceeds the cost of closure to Iran. This assumption is correct in relative terms and misleading in absolute terms. Iran would suffer severely from a Hormuz closure that it initiated. Its oil exports, its import supply chain, and its remaining international financial connections all depend on the strait remaining open. The question is whether the political leadership in Tehran would initiate a closure despite these costs, and under what conditions the answer would be yes. The Iranian domestic economy is the ledger that answers that question.

The strategic partnership between Russia and Iran has been deepening since 2022 in ways that have direct implications for the Persian Gulf security environment. The relationship is not an alliance in the formal sense — no mutual defense treaty binds Moscow and Tehran, and the two countries have a long history of friction and competing interests that did not disappear when their shared confrontation with the West provided new incentives for cooperation. What has emerged is something more specific: a bilateral relationship structured around shared sanctions exposure, complementary military needs, and converging interests in reducing American influence in the regions that matter to each of them.

Iran’s nuclear program and the Strait of Hormuz are connected through a logic that diplomatic analysis frequently understates. The connection is not simply that a nuclear-armed Iran would be more willing to close the strait — though that proposition has its own merit. It is that the negotiations over the nuclear program, the sanctions imposed to pressure it, and the diplomatic settlements that have attempted to resolve it are all embedded in the same geopolitical relationship that determines whether the strait operates as a commercial corridor or a conflict zone. The nuclear file and the Hormuz file are the same file.