The fragile ceasefire between Iran and the US is on the verge of collapse as reports emerge that the Iranian delegation has not yet left for Pakistan to participate in key peace talks.
Iran's Tasnim News Agency quoted a source as saying that neither Foreign Minister Abbas Araghchi nor Parliament Speaker Mohammad Bagher Ghalibaf have departed for Islamabad talks.
Israel's deadly strikes on neighboring Lebanon have triggered uncertainty over the peace process, which was brokered by Pakistan earlier this week.
US President Donald Trump has warned Iran over reports that it may charge fees from vessels passing through the Strait of Hormuz, a key trade waterway.
The talks between Iran and the US are set to take place in Islamabad's Serena Hotel, with the US delegation led by Vice President JD Vance and the Iranian delegation likely to be led by Foreign Minister Abbas Araghchi and Parliament Speaker Mohammad Bagher Ghalibaf.
Kuwait has accused Iran and its proxies of launching drone attacks targeting it, despite the truce between Iran and the US.