Diplomacy Amidst Strait Closure
US and Iran Prepare for Switzerland Talks as Tehran Announces Strait of Hormuz Closure
The United States and Iran sat down Sunday at the Bürgenstock resort in Switzerland to hash out the details of a fragile peace deal — even as Tehran claimed it had shut down the Strait of Hormuz for the second time in days. The talks, led by U.S. Vice President JD Vance and Iran's parliamentary speaker Mohammad Bagher Ghalibaf, aim to turn a June 18 Memorandum of Understanding into a lasting end to a war that has cost American taxpayers an estimated $113.3 billion, according to Associated Press.
Iran's military declared the Strait closed on June 20, citing Israeli strikes in Lebanon. But U.S. Central Command pushed back fast. Captain Tim Hawkins said: "Iran does not control the Strait... Traffic continues to flow" — and pointed to 17 million barrels of oil that successfully passed through on Saturday, according to Reuters.
How a Twelve-Day War Led to Switzerland
The conflict traces back to June 2025, when Iran refused a U.S. ultimatum to renegotiate its nuclear program. Fighting escalated sharply on February 28, 2026, with a joint U.S.-Israeli strike called "Operation Epic Fury" that targeted Iranian infrastructure, according to Al Jazeera. A preliminary ceasefire deal — the MoU — was signed electronically on June 17, with President Trump signing at a G7 dinner at the Palace of Versailles, The Washington Post reported.
A technical summit was supposed to happen on June 19. It was called off at the last minute after Israel struck southern Lebanon following the deaths of four IDF soldiers. Iran warned the truce was "on life support." The talks were rescheduled for Sunday, June 21, with Pakistan and Qatar serving as co-mediators, according to The Guardian.
The Hormuz Closure That May Not Be Real
The Strait of Hormuz is one of the world's most critical chokepoints. About 20 million barrels of oil pass through it every day — roughly 20% of global supply, according to Al Jazeera. Iran's military announced it shut the strait again on June 20, blaming what it called the "Zionist regime's continuous violation" of the ceasefire agreement. The Institute for the Study of War says Iran is using the closure as economic pressure to push the U.S. to restrain Israel in Lebanon.
The U.S. disputes the closure entirely. CENTCOM says traffic kept moving. But the threat alone is rattling markets. Analysts warn a sustained blockade could push oil prices to $150 per barrel and deal a $2.2 trillion blow to global GDP, according to the International Energy Agency. Trump added his own threat on Truth Social, warning of "American tolls" in the Strait if a final deal isn't done within 60 days, The Hindu reported.
What Both Sides Want From the Talks
Vance told reporters the two big goals are progress on Iran's nuclear program and a ceasefire in Lebanon. "We're going to hopefully make progress on the nuclear issue [and] the Lebanon ceasefire issue," he said, according to The Guardian. The Iranian side included central bank and oil officials — a sign that unfreezing roughly $6 billion in Iranian assets is also on the table, The Times of Israel reported.
Not everyone is happy with the direction of the talks. Israeli officials and some U.S. Republican hardliners call the deal a "humiliation," fearing that unfreezing Iranian assets will fund more proxy activity in the region. Meanwhile, an AP-NORC poll released June 19 found that 65% of Americans disapprove of Trump's handling of Iran, with his overall approval sitting at just 37%, according to Forbes.
A 60-Day Clock and the Cost of Failure
The June 18 MoU set a 60-day deadline to reach a full agreement. If talks collapse, Trump has threatened to strike Iran again — "very hard... harder!!!" he wrote on Truth Social. The war has already cost the average U.S. household $300 in extra fuel costs since it began, according to the Brown University Costs of War Project. In Lebanon, at least 16 people were killed and 12 wounded in Saturday's Israeli strikes, Associated Press reported.
GCC states in the Gulf face a more immediate threat if the Strait stays closed. They rely on the waterway for 80% of their food imports. A full, sustained blockade would be the "largest supply disruption in the history of the global oil market," the IEA has warned. With formal talks now underway at Bürgenstock, the next 60 days will determine whether the ceasefire becomes a lasting peace or a prelude to more war.
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