A cloud of uncertainty hung Friday over the scheduled start of talks in Pakistan between the United States and Iran, with no announcement yet on the arrival of negotiators and both sides accusing the other of failing to properly implement a fragile ceasefire. US President Donald Trump has voiced displeasure at Iran's handling of the strategic Strait of Hormuz, which was meant to be reopened under the deal, while Tehran has reacted angrily to Israeli attacks in Lebanon, insisting that it too falls under the agreement -- something Washington disputes. Islamabad was nonetheless pressing ahead with its preparations for the high-stakes talks.
