Further US-Iran talks due on Sunday after conflicting messages on Strait of Hormuz.
An Iranian delegation has landed in Switzerland ahead of further talks with the US on Sunday, with JD Vance having departed Washington to attend.
Speaking to reporters before boarding his flight, the US vice-president said he hoped to make progress on "the nuclear issue" and the "Lebanon ceasefire issue".
Earlier today, Iran's military claimed it was shutting the Strait of Hormuz in response to Israeli strikes in Lebanon.
The existing deal demands an "immediate and permanent" end to fighting on all fronts, including in Lebanon.
US President Donald Trump said there would be "NO TOLLS" in the strait "unless they are imposed by and for the United States of America".
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