Trump Announces US-Iran Memorandum of Understanding as Strait of Hormuz Set to Fully Reopen

U.S. President Donald Trump stated on Monday, June 15, 2026, that the United States and Iran have signed a memorandum of understanding (MoU) aimed at ending military operations and reopening the Strait of Hormuz to international shipping.

Speaking to reporters shortly after arriving in France for the G7 summit in Évian-les-Bains, Trump confirmed that the agreement had been finalized. “The agreement has been signed,” he said. “As you know, the strait has been partially open. On Friday, the strait will be completely open.”

The MoU, which builds on an earlier ceasefire, includes the immediate reopening of the strategically vital Strait of Hormuz without tolls, the lifting of the U.S. naval blockade on Iranian ports, and provisions for phased sanctions relief tied to Iranian compliance. Full details of the agreement text are expected to be released shortly after a formal signing ceremony scheduled for Friday, June 19, in Geneva, Switzerland.

Trump indicated he may not personally attend the Geneva ceremony but confirmed that Vice President JD Vance would represent the United States. He emphasized that any easing of sanctions on Tehran would depend on Iran’s behavior. “It actually depends on their performance,” Trump said. “If they do what they’re supposed to do, the measures will start to take effect.”

The announcement came during bilateral meetings at the G7 summit, including discussions with French President Emmanuel Macron. The deal is intended to end more than three months of conflict that began with U.S.-Israeli strikes on Iranian targets in late February 2026. It establishes a framework for further negotiations on Iran’s nuclear program over the coming 60 days, with Iran committing not to pursue nuclear weapons.

The reopening of the Strait of Hormuz is expected to ease global energy market pressures that have driven up oil prices in recent months. Markets reacted positively to the news, with oil prices declining.

This development marks a significant diplomatic breakthrough for the Trump administration, achieved with mediation support, though challenges remain, including unresolved issues with regional actors such as Israel.