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U.S. and Iran Accelerate Interim Agreement; Naval Blockade Lifted as Nuclear Talks Begin

The Strait of Hormuz has reopened following a surprise early signing of an interim memorandum between the Trump administration and Tehran.

June 18, 2026 at 5:00 PM

The United States and Iran have moved faster than anticipated to implement a de-escalation framework, with reports confirming that an interim Memorandum of Understanding (MOU) was electronically signed on June 14. This early signing, involving President Trump and Iranian parliamentary speaker Mohammad Bagher Ghalibaf, effectively bypassed a planned ceremony in Switzerland to prioritize the immediate reopening of the Strait of Hormuz and the lifting of the U.S. naval blockade. The agreement initiates a 60-day window for technical negotiations focused on Iran’s nuclear program. While the immediate economic pressure on global shipping has eased, Iranian officials have signaled that they intend to impose transit fees on vessels after the initial 60-day fee-free period. Domestically, the Trump administration faces criticism from members of the Republican party who argue the interim deal provides too much leverage to Tehran without securing a permanent settlement. U.S. Defense Secretary Pete Hegseth emphasized that the current military stand-down is conditional. He stated on June 18 that the United States is prepared to reinstituted an "ironclad blockade" and resume military operations should Iran fail to comply with its obligations during the upcoming technical talks. The deal is currently being treated as a framework for discussion rather than a final peace treaty, with global energy markets closely monitoring the stability of the resumed maritime traffic.

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