US-Iran talks in Switzerland get under way as strait of Hormuz remains closed

JD Vance says talks aim to make progress on the nuclear issue, make progress on the Lebanon ceasefire issue'

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Talks between Iran and the US aimed at building out the fragile interim deal to end the war have got under way in Switzerland, beset by difficulties including an Iranian decision to keep the strait of Hormuz closed in protest at Donald Trump's inability to force Israel to end the fighting in Lebanon.

The US vice-president, JD Vance, leading the US delegation, said he was adding Lebanon to an agenda that had originally been conceived to focus on the opening of the strait, the lifting of US sanctions on Iranian oil exports and the unfreezing of Iranian assets held overseas.