The warning, delivered via Trump’s Truth Social platform, comes amid intense global scrutiny over the implementation of a fragile, 60-day interim ceasefire agreement brokered between Washington and Tehran.

Seeking to squash reports that Tehran plans to generate revenue from the newly reopened waterway, President Trump asserted that Iranian officials have explicitly promised Washington they will not impose transit penalties.

"Iran has informed the U.S. that, despite troublemaking Fake News reporting to the contrary, there are 'NO TOLLS, NO INSURANCE COSTS, & NO OTHER CHARGES OF ANY KIND BEING SOUGHT OR RECEIVED BY IRAN ON SHIPS TRAVELING THE STRAIT OF HORMUZ,'" Trump wrote.

"If this is false information, negotiations would end, immediately!"

The friction stems from ambiguous language in the recently signed Memorandum of Understanding. While the initial framework states that Iran will use its best efforts to ensure the free, uncharged passage of commercial vessels for the 60-day negotiation window, statements from hardline factions in Tehran, including comments from Foreign Ministry spokespeople, hinted that Iran retained the right to collect fees in exchange for services provided to transiting ships.

The stakes for global energy markets could not be higher, as the Strait of Hormuz is widely considered the world's most critical maritime chokepoint.

Roughly twenty percent of the world's petroleum and a massive share of liquefied natural gas flow through the narrow passage daily. During earlier hostilities this year, disruptions to the strait sent global gas prices soaring and forced shipping conglomerates to reroute vessels around Africa, severely inflating global supply chain costs.

While the U.S. has conditionally lifted blockades on Iranian ports to allow restricted oil sales during the 60-day window, U.S. Central Command remains on high alert, emphasizing that international forces will continue monitoring traffic to ensure the waterway stays free and open.

Over the weekend, Trump further complicated the maritime dispute by floating a separate threat, warning that if a permanent peace deal isn't reached within the 60 days, the United States might impose its own transit tolls on the region for services rendered as a security guardian to the countries of the Middle East.

In tandem with his maritime warnings, President Trump moved to quiet bipartisan domestic pushback over the financial parameters of the deal. Critics in Congress have expressed fierce concern that the initial sanctions relief represents a surrender that could inadvertently enrich a hostile state.

Trump explicitly denied rumors that cash or liquid capital had been wired directly to the Iranian government, stating that no money has been given to Iran, or released from their money to them, by the United States.

Instead, the administration is moving forward with a tightly controlled humanitarian escrow account system structured in coordination with international mediators in Switzerland and Qatar. Under this framework, billions in frozen Iranian foreign assets will remain entirely under U.S. oversight. Rather than transferring funds, the U.S. will tap into these reserves to buy agricultural commodities directly from American producers.

U.S. President Donald Trump issued a sharp ultimatum to Tehran on Wednesday, warning that high-stakes peace negotiations would end "immediately" if Iran attempts to levy transit fees, insurance costs, or any other financial charges on commercial vessels navigating the strategic Strait of Hormuz.