Secretary of State Marco Rubio warned Friday against Iran trying to create a “tolling system” for commercial shipping to pass through the Strait of Hormuz.

“They’re trying to convince Oman, by the way, to join them in this tolling system,” he said while in Sweden for a NATO foreign ministers meeting. ”There is not a country in the world that should accept that.”

“I don’t know of anyone in the world that should be in favor of a tolling system in an international waterway, that’s just not acceptable. It can’t happen,” Rubio continued.  

President Trump reiterated Thursday that he was against any sort of tolling system for the strait: “We want it open. We want it free. We don’t want tolls. It’s international. It’s an international waterway.”