This critical situation began when Iran effectively started charging “tolls” for safe passage through the Strait of Hormuz, one of the world's most vital oil transit chokepoints.
The issue stems from a complex chain of events. First, Iran's Islamic Revolutionary Guard Corps (IRGC) established what amounts to a “toll booth” in late March 2026. They began controlling a narrow maritime corridor, escorting vessels, and demanding payments up to $2 million per ship, sometimes settled in Chinese yuan or cryptocurrency. This action directly challenges the UN Convention on the Law of the Sea (UNCLOS), which guarantees the right of unimpeded “transit passage” through such international straits without fees, except for specific rendered services.
Secondly, this created a severe legal and financial dilemma for global companies. The U.S. Treasury's Office of Foreign Assets Control (OFAC) had issued a temporary General License to allow the transport of Iranian oil already loaded onto ships. However, this license almost certainly does not cover paying “tolls” to the IRGC, a heavily sanctioned entity. Therefore, companies found themselves in an impossible bind: pay the toll to move their cargo or refuse and risk violating U.S. sanctions, with massive financial penalties.
Finally, the political response from Washington has been ambiguous, causing further alarm. Following escalating tensions, the U.S. and Iran agreed to a temporary ceasefire conditioned on reopening the strait. The official White House position is that Hormuz must be reopened “without any limitations, including tolls.” However, President Trump also publicly mused about a U.S.–Iran “joint venture,” which the industry interpreted as a potential backdoor to legitimizing these payments.
This is precisely why U.S. oil majors are now lobbying the White House so intensely. Their concern isn't just the immediate cost, which could add roughly $0.28 per barrel to the global average price of oil. The much larger fear is the precedent. If Iran successfully monetizes a critical chokepoint in violation of international law, it could embolden other nations controlling key waterways like the Turkish Straits or the Strait of Malacca to impose similar fees, fundamentally disrupting global trade and energy security.
- Strait of Hormuz: A narrow waterway between Iran and Oman, through which about a fifth of the world's total oil supply passes, making it a critical strategic chokepoint.
- UNCLOS (United Nations Convention on the Law of the Sea): An international treaty that establishes a legal framework for all marine and maritime activities.
- IRGC (Islamic Revolutionary Guard Corps): A powerful branch of the Iranian Armed Forces, which the U.S. has designated as a foreign terrorist organization and is subject to extensive sanctions.